1.
[syn: surely, certainly, sure, for sure, for certain, sure enough, sure as shooting]
The Collaborative International Dictionary of English v.0.48:
Certainly \Cer"tain*ly\, adv.
Without doubt or question; unquestionably.
[1913 Webster]
WordNet (r) 3.0 (2006):
certainly
adv 1: definitely or positively (`sure' is sometimes used
informally for `surely'); "the results are surely
encouraging"; "she certainly is a hard worker"; "it's
going to be a good day for sure"; "they are coming, for
certain"; "they thought he had been killed sure enough";
"he'll win sure as shooting"; "they sure smell good";
"sure he'll come" [syn: surely, certainly, sure,
for sure, for certain, sure enough, sure as
shooting]