Face vs Undergo

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

Face

Top 1,000 (very common)A1noun

Undergo

Top 2,000 (common)B2verb
Most common: Face
 FaceUndergo
Pronunciation🇬🇧 /["/feɪs/"]/🇺🇸 /["/feɪs/"]/🇬🇧 /["/ˌʌndəˈɡəʊ/","/ˌʌndəˈɡəʊz/","/ˌʌndəˈwent/","/ˌʌndəˈɡɒn/","/ˌʌndəˈɡəʊɪŋ/"]/🇺🇸 /["/ˌʌndərˈɡəʊ/","/ˌʌndərˈɡəʊz/","/ˌʌndərˈwent/","/ˌʌndərˈɡɔːn/","/ˌʌndərˈɡəʊɪŋ/"]/
MeaningThe front part of your head where your eyes, nose, and mouth are.to go through something, especially a change or process
ExampleShe has a beautiful face.to **undergo tests/trials/repairs**
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA1B2
Part of speechnounverb
Collocationsfront, rear, North, face down, face downwards/​downward, face up, animated, cheerful, friendly, make, pull, search, look, seem, grow, on somebody’s face, a face like thunder, keep a straight face, an/​the expression on somebody’s face, familiar, old, different, see, front, rear, North, face down, face downwards/​downward, face up, front, rear, North, face down, face downwards/​downward, face up, human, acceptable, unacceptable, human, acceptable, unacceptableundergo treatment, undergo changes, undergo a procedure, undergo transformation, undergo testing
Antonymsturn away, ignoreavoid, bypass, neglect
Common mistakesConfused with 'faced' as the past tense of 'face', Using 'face' without an object unintentionally in casual speech, Misusing 'facing' in the wrong tenseConfused with 'underwent', which is the past form, Using it without an object, e.g., 'She will undergo.' (missing 'treatment'), Incorrectly assuming it can take a direct object without context
Usage notesCommonly used to describe confronting someone, or to express emotions. In formal contexts, may refer to challenges or problems. Avoid in highly casual conversations.Typically used in contexts such as medical procedures or transformations. Avoid using in overly casual conversations.

See it in real clips

Face
Undergo

Frequently asked questions: Face vs Undergo

What's the difference between Face and Undergo?

Face: The front part of your head where your eyes, nose, and mouth are. Undergo: to go through something, especially a change or process

Which is more common: Face and Undergo?

Face is the most common in everyday English.

Which is more advanced: Face and Undergo?

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

Are Face and Undergo the same CEFR level?

Face: A1, Undergo: B2 on the CEFR scale.

What part of speech are Face and Undergo?

Face: noun, Undergo: verb.

Can you show an example of each?

Face: She has a beautiful face. Undergo: to **undergo tests/trials/repairs**

Can I use Face and Undergo interchangeably?

Not always. Face and Undergo 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.

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