"Cool!"
'cool' is the definition.
(synonyms)
This is all the clue.
(Other definitions for nonchalant that I've seen before include "Casually unconcerned" , "Cool" , "Uncaring" , "Casual" , "Insouciant" .)
'cool' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for neat that I've seen before include "Tidy - old cow!" , "Clever" , "cow maybe" , "Tidy and spruce" , "Tidy cattle" .)
(Other definitions for nice that I've seen before include "A pleasant French city? ( 4)" , "Agreeable -- subtle" , "Pleasant - exact" , "French resort; pleasing" , "Pleasant Riviera town?" .)
'cool' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for calm that I've seen before include "Tranquil, undisturbed" , "Composed or free from storms" , "Composure or serenity" , "Imperturbable, soothe" , "Cool, not excited" .)
'cool' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for chilly that I've seen before include "not warm" , "Lacking warmth or feeling" , "Unfriendly; coldish" , "Parky" , "Cool" .)