'Thoroughly' definitions:

Definition of 'thoroughly'

(from WordNet)
adverb
In an exhaustive manner; "we searched the files thoroughly" [syn: thoroughly, exhaustively]
adverb
Completely and absolutely (`good' is sometimes used informally for `thoroughly'); "he was soundly defeated"; "we beat him good" [syn: thoroughly, soundly, good]

Definition of 'Thoroughly'

From: GCIDE
  • Thoroughly \Thor"ough*ly\, adv. In a thorough manner; fully; entirely; completely. [1913 Webster]