Only vs Strictly

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

Only

Top 1,000 (very common) A1 adjective

Strictly

Top 2,000 (common) B2 adverb

Most common: Only

	Only	Strictly
Pronunciation	🇬🇧 /["/ˈəʊnli/"]/ 🇺🇸 /["/ˈəʊnli/"]/	🇬🇧 /["/ˈstrɪktli/"]/ 🇺🇸 /["/ˈstrɪktli/"]/
Meaning	just one or a single type of something	only, definitely
Example	She is the only person I trust.	She was brought up very strictly.
Register	Neutral	Neutral
How common	Top 1,000 (very common)	Top 2,000 (common)
CEFR level	A1	B2
Part of speech	adjective	adverb
Collocations	only one, only child, only option, only when, only time	strictly speaking, strictly adhere, strictly prohibited, strictly necessary, strictly enforced
Antonyms	multiple, various, some	loosely, leniently, flexibly, laxly
Common mistakes	Using 'only' in the wrong position, changing the meaning., Confusing 'the only' with 'only'., Overusing 'only', leading to awkward sentences.	Using it in a casual context where 'just' would be more appropriate., Confusing with 'strict', which refers to being demanding or inflexible., Saying 'strictly for' instead of just using 'strictly'.
Usage notes	Use 'only' to restrict meaning. It’s often used to clarify that nothing else is included. Avoid using it excessively, as it can sound limiting or exclusive.	Use 'strictly' when you want to emphasize that something must be done exactly as stated. It's generally used in serious or formal contexts, and less so in casual conversations.

See it in real clips

It's not personal, Sonny. It's strictly business.

Breaking Bad › S1 E3

I am strictly asking

Sherlock › S1 E1

They're not strictly speaking on the drug squad, but they're very keen.

It's not personal, Sonny. It's strictly business.

Breaking Bad › S1 E3

I am strictly asking

Strictly

Frequently asked questions: Only vs Strictly

What's the difference between Only and Strictly?

Only: just one or a single type of something Strictly: only, definitely

Which is more common: Only and Strictly?

Only is the most common in everyday English.

Which is more advanced: Only and Strictly?

Strictly is the highest level, at B2, on the CEFR scale.

Are Only and Strictly the same CEFR level?

Only: A1, Strictly: B2 on the CEFR scale.

What part of speech are Only and Strictly?

Only: adjective, Strictly: adverb.

Can you show an example of each?

Only: She is the only person I trust. Strictly: She was brought up very strictly.

Can I use Only and Strictly interchangeably?

Not always. Only and Strictly 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.