carefully UK /ˈkɛːf(ə)li/US /ˈkɛɹf(ə)li/adverb 3forms 3phrases 1 adverb3 •paying close attention and thinking about what could go wrongAs he was a politician, he discussed all subjects carefully, not offending anyone.He carefully studied the papers, while planning his next move. •Conscientiously, painstakingly, fastidiously, meticulously •(no longer used) Sorrowfully.[…] there was she faine / To call them all in order to her ayde, / And them conjure, upon eternall paine, / To counsell her, so carefully dismayd, / How she might heale her sonne […] — 1590 formscarefullier · more carefully · most carefully Phrases with carefully tread carefullyTo exercise precaution; to be careful with regards to the situation; to tread lightly.