careful

adjective4

1. •
   paying attention to avoid danger, harm or mistakes

   • 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. •
   (no longer used) Full of cares or anxiety; worried, troubled.

   • Where through long watch, and late daies weary toile, / She soundly slept, and carefull thoughts did quite assoile. — 1590
4. •
   (no longer used) Full of care or grief; sorrowful, sad.