1. exercising caution or showing care or attention

- they were careful when crossing the busy street

- be careful to keep her shoes clean

- did very careful research

Similar word(s): certain, sure, close, conscientious, painstaking, scrupulous, detailed, elaborate, elaborated, minute, narrow, overcareful, particular, protective, studious, thorough, cautious, diligent, prudent

2. cautiously attentive

- careful of her feelings

Similar word(s): aware, mindful, heedful

3. unhurried and with care and dignity

Similar word(s): unhurried, deliberate, measured

4. full of cares or anxiety

- Thou art careful and troubled about many things

Similar word(s): troubled

5. mindful of the future in spending money

- careful with money

Similar word(s): provident, thrifty

Sentences with careful as an adjective:

- He was a slow and careful driver.

- They made a careful search of the crime scene.