or else
B2 used to say what will happen if another thing does not happen:
We must be there by six, or else we'll miss the beginning.
B2 used to compare two different things or situations:
She's either really talkative and you can't shut her up or else she's silent.
informal used as a threat, sometimes humorously:
He'd better find it quickly, or else (= or I will punish him in some way)!
Thesaurus: synonyms and related words
Either, or, neither, nor
- and
- and/or 2
- either
- else
- neither
- nor
- or
- otherwise
You can also find related words, phrases, and synonyms in the topics:
Dangers and threats