Question 1

What does "blanch up" mean?

Accepted Answer

To become suddenly and visibly pale, especially in response to shock, fear, or bad news.

Question 2

How do you use "blanch up" in a sentence?

Accepted Answer

He blanched up when he heard that his wallet had been stolen.

Question 3

Is "blanch up" formal or informal?

Accepted Answer

"blanch up" is informal — used mainly in casual conversation. Very rare and non-standard. 'Blanch' alone carries the full meaning in standard usage. 'Blanch up' appears occasionally in informal speech as an emphatic variant but is not found in major dictionaries. ESL learners should prefer 'go pale,' 'blanch,' or 'turn white.'

blanch up

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