Motive vs Reason

When to use each in English, with meaning, register, and examples.

Motive

Top 1,000 (very common) C1 noun

Reason

Top 1,000 (very common) A1 noun

	Motive	Reason
Pronunciation	🇬🇧 /["/ˈməʊtɪv/"]/ 🇺🇸 /["/ˈməʊtɪv/"]/	🇬🇧 /["/ˈriːzn/"]/ 🇺🇸 /["/ˈriːzn/"]/
Meaning	The reason someone does something.	An explanation or cause for something.
Example	The detective was trying to find the motive behind the crime.	The reason I am late is because of traffic.
Register	Neutral	Neutral
How common	Top 1,000 (very common)	Top 1,000 (very common)
CEFR level	C1	A1
Part of speech	noun	noun
Collocations	hidden, ulterior, good, be inspired by, have, establish, drive somebody/​something, motive in, motive behind, motive for, a variety of motives	cogent, good, sound, be aware of, see, have, by reason of, for a/​the reason, for reason of, all the more reason, all sorts of reasons, every reason, cogent, good, sound, be aware of, see, have, by reason of, for a/​the reason, for reason of, all the more reason, all sorts of reasons, every reason, human, lose, be open to, listen to, beyond reason, within reason, an appeal to reason, faculty of reason, sense of reason, human, lose, be open to, listen to, beyond reason, within reason, an appeal to reason, faculty of reason, sense of reason
Antonyms	apathy, indifference	cause, consequence
Common mistakes	Confused with 'motive' vs 'motif' (artistic theme), Using 'motive' for general causes instead of specific reasons, Incorrectly pluralizing as 'motives' when referring to a singular reason	Confused with 'rationale' — 'reason' is broader., Using 'reason' without 'for' — remember to include it when explaining cause., Mispronouncing as 'ree-zen' instead of 'ree-zon'.
Usage notes	Used in both formal and informal settings. Common in discussions about reasons behind actions, but avoid in casual conversations unless discussing motivations seriously.	Used in both formal and informal contexts. In formal writing, it often appears in discussions and academic papers. In conversational settings, it's common to ask for someone's reason behind their choices.

See it in real clips

for no particular reason.

Sherlock › S1 E1

Maybe he took it from her for some reason.

The Pitt › S1 E1

I must have had a reason

for no particular reason.

Sherlock › S1 E1

Maybe he took it from her for some reason.

Reason

Frequently asked questions: Motive vs Reason

What's the difference between Motive and Reason?

Motive: The reason someone does something. Reason: An explanation or cause for something.

Which is more advanced: Motive and Reason?

Motive is the highest level, at C1, on the CEFR scale.

Are Motive and Reason the same CEFR level?

Motive: C1, Reason: A1 on the CEFR scale.

What part of speech are Motive and Reason?

Motive: noun, Reason: noun.

Can you show an example of each?

Motive: The detective was trying to find the motive behind the crime. Reason: The reason I am late is because of traffic.

Can I use Motive and Reason interchangeably?

Not always. Motive and Reason are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.