say it: KER-luh-slee
carelessly is an adverb meaning "without care or concern". It carries 3 recorded senses.
without care or concern
“carelessly raised the children's hopes without thinking of their possible disappointment”
without caution or prudence
“one unfortunately sees historic features carelessly lost when estates fall into unsympathetic hands”
Definitions, synonyms and semantic relations for carelessly come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.