1: Exercising caution or showing care or attention.

6: Measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects.

7: Hit lightly.

9: To not tell the truth is to tell a ______.

11: A criminal who takes property belonging to someone else.

12: After a long period of time or long delay.

1: Taking care or paying attention; 'They listened very ______.'

2: Have certain properties when driven; 'This car ______ smoothly.'

3: No longer known; irretrievable; a ______ art.

4: The upper side of the thighs of a seated person.

5: A caterpillar turns into this.

8: Not in physical motion.

10: According to popular legend, lives at the North Pole and makes toys for Santa Claus.