badly (adv.)
- afield
- amiss
- astray
- atrociously
- awfully
- awry
- carelessly
- critically
- cruelly
- dangerously
- defectively
- distressfully
- dreadfully
- emotionally
- erroneously
- faultily
- gravely
- greatly
- grievously
- hard
- hardly
- harshly
- horribly
- improperly
- inaccurately
- inadequately
- incorrectly
- ineptly
- insufficiently
- mischievously
- painfully
- poorly
- roughly
- seriously
- severely
- shamefully
- shoddily
- unacceptably
- unfavorably
- unfortunately
- unkindly
- unluckily
- unsatisfactorily
- unspeakably
- unsuccessfully
- viciously
- vigorously
- wickedly
- wretchedly
- wrong
