undesirably
Adverb
Meaning
in an undesirable manner
Source: WordNetSynonyms
unwantedly
unfortunately
badly
adversely
painfully
disagreeably
incompatibly
balefully
unacceptably
unfavorably
uncomfortably
unpleasantly
unsuitably
unattractively
banefully
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Antonyms
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he was unwantedly friendly
Since large drivers require undesirably large cabinets, most subwoofer drivers have large excursions.
This can sometimes produce uncomfortable or undesirably intense experiences.