Definition of "careful" in English

adjective

1. Taking care; attentive to potential danger, error or harm; cautious.

   • He was a slow and careful driver.
   • Be very careful while trekking through the jungle.

2. Conscientious and painstaking; meticulous.

   • They made a careful search of the crime scene.

3. (obsolete) Full of care or grief; sorrowful, sad.

4. (obsolete) Full of cares or anxiety; worried, troubled.