'Surely' definitions:

Definition of 'surely'

From: WordNet
adverb
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]

Definition of 'Surely'

From: GCIDE
  • Surely \Sure"ly\, adv.
  • 1. In a sure or certain manner; certainly; infallibly; undoubtedly; assuredly. [1913 Webster]
  • In the day that thou eatest thereof thou shalt surely die. --Gen. ii. 17. [1913 Webster]
  • He that created something out of nothing, surely can raise great things out of small. --South. [1913 Webster]
  • 2. Without danger; firmly; steadly; securely. [1913 Webster]
  • He that walketh uprightly walketh surely. --Prov. x. 9. [1913 Webster]

Synonyms of 'surely'

From: Moby Thesaurus