careful Definition

1. Giving or showing care and attention; thorough.

Thesaurus: accurate, precise, strict, exact, thorough, meticulous, attentive, particular, rigorous, fastidious, scrupulous; Antonym: inattentive, haphazard, neglectful.
2. Gentle; watchful or mindful; cautious.

Thesaurus: cautious, wary, judicious, protective; guarded, alert, vigilant, anxious, circumspect, uptight (slang); Antonym: imprudent, foolish, heedless, thoughtless.
3. Taking care to avoid harm or damage.
4. Protective of it.

Form: careful of something (usually)