Is aggressive a positive or negative connotation? also these words too natural, chilly, plain, refreshing, giggle, glum, smile, laugh, and chick too if they are neutral positive or negative.

Agressive - negative
natural-neutral
chilly-negative
plain- negative
refreshing- positive
giggle-negative (?) because it means to laugh in a nervous or silly way; not sure though
glum-negative
smile-positive
laugh-neutral
chick-negative