1 painstaking, thorough.
2 cautious.
3 done with care and attention.
4 (usu. foll. by that + clause, or to + infin.) taking care; not neglecting.
5 (foll. by for, of) concerned for; taking care of.
Derivatives:
carefully adv. carefulness n.
Etymology: OE carful (as CARE, -FUL)
Useful english dictionary. 2012.