be on the ball
C1 to be quick to understand and react to things:
I didn't sleep well last night and I'm not really on the ball today.
Thesaurus: synonyms and related words
Aware
- abreast
- acquainted
- alive
- alive to sth idiom
- au fait
- awake
- awakening
- be no stranger to sth idiom
- familiar
- have/keep your finger on the pulse idiom
- informed
- insider
- ivory tower
- keep sb in the picture idiom
- onto
- privy
- put sb in the picture idiom
- repository
- sad
- sadder but wiser idiom
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