See assuredly in Webster's New World Roget's A-Z Thesaurus II
adverb
It is so; as you say or ask:
absolutely, agreed, all right, aye, gladly, indubitably, roger, undoubtedly, unquestionably, willingly, yea, yes. (Informal) OK, uh-huh, yeah, yep. (Slang) right on. See affirm
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