alphabet

Heads-Up

Antonyms for heads-up:

unalert.

Synonyms for heads-up:

all (adjective)

wide-awake.

heads-up (noun)

wide-awake, alert.

Sense 6

look out.

Other synonyms and related words:

alarm, admonition, notice, caution, unsleeping, admonishment, forewarning.

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