English

Definition of signally adverb from the Oxford Advanced Learner's Dictionary

 

signally

 adverb
adverb
BrE BrE//ˈsɪɡnəli//
 
; NAmE NAmE//ˈsɪɡnəli//
 
(formal)
 
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in a way that is serious and very noticeable They have signally failed to keep their election promises.
See the Oxford Advanced American Dictionary entry: signally