chocolate
vigilant
No. The suffix -ful means "full" but is only a compound noun in such words as cupful or teaspoonful. In watchful, peaceful, and beautiful, it just forms an adjective.
Synonyms for cautious: watchful alert safe careful
There is no anagram for the word watchful. The next longest possible word from those letters is hatful.
The root word in "attention" that means stretch is "tend" from the Latin word "tendere," which means to stretch or extend.
Attention seeker, attentive, any synonym of the word attention really
The security guard remained watchful throughout the night, ensuring the safety of the premises.
alert
Sylw. It means to give attention
The word watch can be a noun and a verb. The noun is a device that tells the time worn on the wrist. The verb form means to observe.
captivate
The Latin root word for attention is "attendere," which means "to stretch out" or "to reach toward."