sure thing
2 antonyms for sure thing — opposites grouped by meaning.
Interjection — Yes, of course; used as a relaxed, friendly way of agreeing to a request.
Synonyms by Meaning
1. interjection informal
Yes, of course; used as a relaxed, friendly way of agreeing to a request.
“"Can you grab the door?" "Sure thing."”
Antonyms
How to use sure thing
The word patterns that sound natural to a native speaker.
Informal, especially common in American English.