Causative Constructions in Yoruba

In Brief

Yoruba commonly uses mú when something causes a result: Ó mú mi bínú means “It made me angry.” Use jẹ́ kí when someone permits, allows, or tells another person to do something: Jẹ́ kí ó lọ means “Let him or her go.” A fuller result clause can also follow mú kí: Ó mú kí n ronú — “It made me think.”

Overview

A causative construction expresses that one person, event, or thing brings about another action or state. In plain terms, the subject does not necessarily perform the second action directly; it causes someone else to act, feel, or become a certain way. English often packs this meaning into verbs such as “make,” “cause,” “get,” “let,” and “allow.” Yoruba usually builds it with ordinary verbs and a following predicate or clause.

At B1, the central contrast is between mú and jẹ́ kí. Mú presents a cause and its effect, often with a strong English equivalent such as “make” or “cause.” Jẹ́ kí presents permission, non-interference, a suggestion, or an instruction, and often corresponds to “let” or “allow.” The two are related because both involve influence over an outcome, but they are not interchangeable.

These patterns are useful far beyond commands. They let you explain emotional reactions, consequences, rules, decisions, and changes in another person’s behavior. They also build on basic Yoruba verbs: the verb after the affected person normally keeps the same form because Yoruba verbs do not change for person.

How It Works

1. mú + affected person + result

The simplest pattern places the person or thing affected directly after mú:

Part	Function	Example
causer	the person or thing producing the effect	Ìròyìn náà — the news
mú	cause or make	mú
affected person	the one experiencing or performing the result	mi — me
result	an action, feeling, or state	bínú — be angry

The complete sentence is Ìròyìn náà mú mi bínú — “The news made me angry.” Here mi is the object of mú (the person affected by the causing), but it is also understood as the person who is angry.

The basic formula is:

causer + mú + affected person/thing + result predicate

A predicate is simply what is said about someone: what they do or what state they are in. The result may therefore be an action or a state:

• Ó mú ọmọ náà sunkún. — “It made the child cry.”
• Orin náà mú wa jó. — “The song made us dance.”
• Oúnjẹ náà mú mi dùn. — “The food made me happy.”

Yoruba does not insert an equivalent of English “to” before the result verb. Say mú wa ṣiṣẹ́, not a word-for-word copy of “made us to work.”

2. mú kí + full result clause

A cause can also be followed by kí and a full clause (a group of words with its own subject and predicate):

causer + mú kí + subject + result

• Èyí mú kí n ronú. — “This made me think.”
• Òjò mú kí a dúró sí ilé. — “The rain caused us to stay at home.”

This pattern makes the result feel more clearly like a separate event. It is especially useful when the result is longer, has its own aspect marker, or needs additional detail. Compare:

• Ó mú mi rẹ́rìn-ín. — “It made me laugh.”
• Ó mú kí n máa rẹ́rìn-ín. — “It made me keep laughing / start laughing repeatedly.”

In the second sentence, n is the shortened first-person subject form used before the verb in this kí clause. Do not place the object form mi after kí.

Subject forms after kí

The following forms are useful in both mú kí and jẹ́ kí constructions:

Meaning	Form after kí	Example
I	kí n	kí n lọ — that I go
you (singular)	kí o	kí o lọ — that you go
he/she/it	kí ó	kí ó lọ — that he/she/it go
we	kí a	kí a lọ — that we go
you (plural/polite)	kí ẹ	kí ẹ lọ — that you go
they	kí wọ́n	kí wọ́n lọ — that they go

Tone marks matter. In careful writing, distinguish o “you” from ó “he/she/it,” and preserve the tones in jẹ́, kí, and the pronouns.

3. jẹ́ kí + subject + action or state

The core permission pattern is:

jẹ́ kí + subject + predicate

• Jẹ́ kí ó lọ. — “Let him or her go.”
• Jẹ́ kí n sọ̀rọ̀. — “Let me speak.”
• Jẹ́ kí wọ́n wọlé. — “Let them come in.”

Although jẹ́ has several meanings in Yoruba, including “be” and “eat” in different tonal forms and contexts, jẹ́ kí should be learned as a unit here. In this construction it introduces the outcome that is to be allowed or brought about.

When speaking politely to one respected person or addressing more than one person, use Ẹ jẹ́ kí ...:

• Ẹ jẹ́ kí n ṣàlàyé. — “Please let me explain.”
• Ẹ jẹ́ kí àwọn ọmọ wọlé. — “Let the children come in.”

The opening ẹ addresses the people being asked; the subject after kí identifies who performs the following action. These roles can be different.

Choosing between mú and jẹ́ kí

Intended meaning	Usual pattern	Example
X produces a result in Y	mú + Y + result	Ó mú mi bínú.
X causes a fuller event	mú kí + clause	Ó mú kí n yí èrò mi padà.
someone permits an action	jẹ́ kí + clause	Jẹ́ kí ó lọ.
speaker asks to do something	jẹ́ kí n + verb	Jẹ́ kí n rí i.
polite or plural request	Ẹ jẹ́ kí + clause	Ẹ jẹ́ kí a bẹ̀rẹ̀.

English “make” can imply force, persuasion, or simply cause and effect. Yoruba mú also depends on context; it does not by itself tell you exactly how deliberate or forceful the cause was. English “let” is similarly broad, while jẹ́ kí can range from genuine permission to a proposal such as “let us begin.”

Examples in Context

Yoruba	English	Note
Ó mú mi bínú.	It made me angry.	Direct affected-person pattern
Oúnjẹ náà mú mi dùn.	The food made me happy.	A thing causes an emotional state
Wọ́n mú wa ṣiṣẹ́ lọ́pọ̀lọpọ̀.	They made us work a lot.	The affected person performs an action
Ìròyìn náà mú gbogbo wọn yà.	The news surprised all of them.	Literally, it caused all of them to be surprised
Orin náà mú àwọn ọmọ jó.	The song made the children dance.	A nonhuman cause
Òjò mú kí a dúró sí ilé.	The rain caused us to stay at home.	mú kí introduces a full clause
Èyí mú kí n ronú jinlẹ̀.	This made me think deeply.	First-person kí n
Ìpinnu náà mú kí wọ́n yí ètò wọn padà.	The decision made them change their plan.	A longer result clause
Jẹ́ kí ó lọ.	Let him or her go.	Permission or non-interference
Jẹ́ kí n rí i.	Let me see it.	A common request to inspect something
Jẹ́ kí a bẹ̀rẹ̀.	Let us begin.	A proposal including the speaker
Jẹ́ kí wọ́n wọlé.	Let them come in.	Permission for a third party
Ẹ jẹ́ kí n ṣàlàyé.	Please let me explain.	Polite or plural addressee
Má jẹ́ kí ọmọ náà jáde.	Do not let the child go outside.	Negative command

Common Mistakes

1. Using an object pronoun after kí

• Wrong: Jẹ́ kí mi lọ.
• Right: Jẹ́ kí n lọ.
• Why: After kí, the following action has its own subject. Use n for “I” in kí n, not the object pronoun mi.

2. Omitting kí after jẹ́

• Wrong: Jẹ́ ó lọ.
• Right: Jẹ́ kí ó lọ.
• Why: Permission is expressed by the fixed sequence jẹ́ kí followed by a clause. English “let him go” has no visible equivalent of kí, but Yoruba requires it.

3. Adding kí indiscriminately after mú

• Awkward for the basic pattern: Ó mú kí mi bínú.
• Right: Ó mú mi bínú.
• Also right with a clause: Ó mú kí n bínú.
• Why: Choose either mú + affected object + result or mú kí + subject + result. Do not combine kí with the object form mi.

4. Treating mú and jẹ́ kí as synonyms

• Wrong for permission: Ó mú mi lọ when you mean “He allowed me to go.”
• Right: Ó jẹ́ kí n lọ.
• Why: Mú presents the person as causing the action; jẹ́ kí presents the person as allowing it. The difference between “made me go” and “let me go” is important.

5. Losing the pronoun tone marks

• Unclear in careful writing: Jẹ́ ki o lọ.
• Right: Jẹ́ kí ó lọ. — “Let him/her go.”
• Also possible with a different meaning: Jẹ́ kí o lọ. — “Let you go,” where o is singular “you.”
• Why: Yoruba tone marks distinguish words and grammatical forms. A missing acute accent can hide who is expected to act.

Usage Notes

Jẹ́ kí is frequent in everyday requests. Jẹ́ kí n rí i may function much like “let me see,” and Jẹ́ kí a lọ can be a practical suggestion: “Let’s go.” The construction is therefore not always about formal permission from an authority. Intonation and situation show whether it is a request, suggestion, instruction, or literal act of allowing.

Use Ẹ jẹ́ kí when politeness or plural address calls for the respectful/plural subject pronoun ẹ. This does more than translate English “please,” but in a suitable request it often contributes the same respectful effect. Courtesy can also be expressed through greeting, title, tone of voice, and context.

With mú, a person can be an intentional causer, but an event or object can also be the cause: rain can make people stay home, news can make them worry, and music can make them dance. This makes the construction natural for cause-and-effect explanations as well as interpersonal control.

Negative commands normally place má before jẹ́: Má jẹ́ kí ó wọlé — “Don’t let him or her enter.” The longer pattern Má ṣe jẹ́ kí ... is also heard and makes the prohibition explicit. For factual negation rather than a command, the exact negative form depends on the tense, aspect, and sentence type; do not assume that English “not” always maps to a single fixed position.

Beyond the Basics / Advanced Use

Result clauses can carry aspect and modality

A mú kí clause can contain markers that add meanings such as ongoing, habitual, future, or ability. This is one reason to choose the full-clause pattern:

• Ó mú kí n máa ronú nípa ọjọ́ iwájú. — “It made me keep thinking about the future.”
• Ìrírí náà mú kí ó lè lóye wọn dáadáa. — “That experience enabled him or her to understand them well.”

The causative construction does not replace those markers. It frames the causing event, while the embedded clause describes the resulting event in more detail.

“Let” does not always mean permission

English uses “let” in several formulas that require attention rather than automatic translation. “Let’s go” maps naturally to Jẹ́ kí a lọ, but “let me know” is a request to provide information, commonly expressed as Jẹ́ kí n mọ̀. In context, this literally frames the desired result as “allow/cause me to know.” Learn frequent expressions as complete phrases instead of translating each English word separately.

Agency comes from context

Neither pattern alone gives a complete account of intention. Ọ̀rọ̀ rẹ̀ mú mi bínú (“Your words made me angry”) states a causal link but does not prove that the speaker intended to anger anyone. Conversely, a sentence about people making others work may strongly suggest control. Add vocabulary about intention, force, persuasion, or accident when that distinction matters rather than expecting mú to carry all of it.

Two participants may be easy to confuse

In Ẹ jẹ́ kí n ṣàlàyé, ẹ is the person or group being addressed, while n is the person who will explain. In Jẹ́ kí wọ́n wọlé, the listener is left unstated, and wọ́n identifies the people who should enter. Tracking “Who is being asked?” separately from “Who performs the result?” makes longer sentences much easier to understand.

Practice Tips

1. Build contrasting pairs. Say Ó mú mi lọ (“He/she made me go”) beside Ó jẹ́ kí n lọ (“He/she let me go”). Change only the causative pattern so that the force-versus-permission contrast becomes automatic.
2. Cycle through subjects after kí. Practice kí n lọ, kí o lọ, kí ó lọ, kí a lọ, kí ẹ lọ, kí wọ́n lọ. Then replace lọ with familiar verbs such as wá, jẹun, sùn, and sọ̀rọ̀.
3. Describe real causes. Each day, make one sentence about an emotion and one about an action: “The news made me happy,” “The rain made us stay home,” or “Let the children play.” This trains both mú patterns and jẹ́ kí in meaningful contexts.

Related Concepts

• Prerequisite: Common Basic Verbs — supplies the everyday action verbs used as results after mú and jẹ́ kí.
• Related: Purpose Clauses (Kí/Láti) — develops another important use of kí in a following clause.