"unkindly" in the adjective sense
1. unkindly, unsympathetic
lacking in sympathy and kindness
"unkindly ancts"
"unkindly" in the adverb sense
1. unkindly
in an unkind manner or with unkindness
"The teacher treats the children unkindly"
Source: WordNet® (An amazing lexical database of English)
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