caffeine up

C1 slang intransitive

In simple words

Drink lots of coffee to wake up and feel more energetic.

Literal meaning: To load up on caffeine.

Meanings

1 C1 slang

rare

To drink coffee or other caffeinated drinks, especially in quantity, to boost energy or alertness.

"I need to caffeine up before this all-day meeting — I barely slept last night."

Usage notes

Modern informal expression, especially common among students and young professionals. Primarily American English. Used humorously or casually.

coffee espresso morning energy drink before exam

Base

caffeine up

I/you/we/they

3rd person

caffeines up

he/she/it

Past simple

caffeined up

yesterday

Past participle

caffeined up

have + pp

-ing form

caffeining up

continuous

Try:

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caf up fuel up on coffee load up on caffeine dose up on coffee

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