A four letter word meaning smart could be hurt, sting, ache, or pain.
Quip
Joke
encouragement
Try the word mayor.
cry
Aviary.
One choice is the word peculiar.
A 6-letter word beginning with 'a' that means smart is astute.
understanding
Astute is a word that means smart.
One word is diencephalon.
inteligente. It literally means intelligent in english.
smart
either instigating or being smart about it
One word that could mean smart is Logical.
smart
Intelligent
Precocious
Foolish