Definition of decidedly adverb from the Oxford Advanced American Dictionary

decidedly

adverb
/dɪˈsaɪdədli/
 
 
1 (used with an adjective or adverb) definitely and in an obvious wayAmy was looking decidedly worried.Their relationship is beginning to look decidedly shaky.2 in a way that shows that you are sure and determined about something“I won't go,” she said decidedly.
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