- certainly
- 1. adverb
this is certainly a forgery
Syn:unquestionably, surely, assuredly, definitely, beyond/without question, without doubt, indubitably, undeniably, irrefutably, indisputably; obviously, patently, evidently, plainly, clearly, unmistakably, undisputedly, undoubtedly; informal sure as shootin', for sureAnt:possibly2. exclamation"May I have one?" "Certainly."
Syn:yes, definitely, absolutely, sure, by all means, indeed, of course, naturally; affirmative; informal OK, okay
Thesaurus of popular words. 2014.