Antonyms of adv carefully

1 of 2 senses of carefully

Sense 2
cautiously, carefully -- (as if with kid gloves; with caution or prudence or tact; "she ventured cautiously downstairs"; "they handled the incident with kid gloves")
       Antonym of carelessly (Sense 2)
      => incautiously, carelessly -- (without caution or prudence; "one unfortunately sees historic features carelessly lost when estates fall into unsympathetic hands")

Synonyms of adv carefully

2 senses of carefully

Sense 1
carefully -- (taking care or paying attention; "they watched carefully")

Sense 2
cautiously, carefully -- (as if with kid gloves; with caution or prudence or tact; "she ventured cautiously downstairs"; "they handled the incident with kid gloves")