Clear vs Plain

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

Clear

Top 1,000 (very common) A2 adjective

Plain

Top 1,000 (very common) B2 adjective

	Clear	Plain
Pronunciation	🇬🇧 /["/klɪə(r)/"]/ 🇺🇸 /["/klɪr/"]/ Hear Clear	🇬🇧 /["/pleɪn/"]/ 🇺🇸 /["/pleɪn/"]/ Hear Plain
Meaning	Easy to see through or understand.	Simple and without decoration.
Example	The sky is very clear today, perfect for a picnic.	The design was quite plain, lacking any decorative elements.
Register	Neutral	Neutral
How common	Top 1,000 (very common)	Top 1,000 (very common)
CEFR level	A2	B2
Part of speech	adjective	adjective
Collocations	be, seem, become, extremely, fairly, very, to, clear and concise, be, seem, become, extremely, fairly, very, to, clear and concise, be, extremely, fairly, very, about, on, be, look, become, extremely, fairly, very, loud and clear, be, become, extremely, fairly, very, be, look, seem, completely, fairly, pretty, of	be, look, seem, extremely, fairly, very, plain blue, white, etc., be, look, seem, extremely, fairly, very, plain blue, white, etc., be, seem, become, fairly, very, etc., to
Antonyms	cloudy, unclear, muddy	fancy, ornate, complicated
Common mistakes	'Clear' is often confused with 'clean.', 'Clear' is sometimes incorrectly used as a verb instead of an adjective., Learners may forget to use 'clear' to describe abstract concepts, like thoughts.	'Plain' is often confused with 'plane' in spelling., Learners might use 'plain' to describe flavor instead of 'bland'., Some use 'plain' incorrectly to mean 'clear' instead of simple.
Usage notes	Use 'clear' to describe something easily understood or free of obstructions. It’s appropriate in both casual and formal contexts. Avoid using it in overly technical discussions where precision matters.	Use 'plain' to describe something that is straightforward or lacks complexity. It's often used in both written and spoken contexts, suitable for everyday conversation or descriptions.

Frequently asked questions: Clear vs Plain

What's the difference between Clear and Plain?

Clear: Easy to see through or understand. Plain: Simple and without decoration.

Are Clear and Plain the same CEFR level?

Clear: A2, Plain: B2 on the CEFR scale.

Can I use Clear and Plain interchangeably?

Not always. Clear and Plain 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.