Being so nonchalant sounds a bit scary (4)
I believe the answer is:
airy
'being so nonchalant sounds a bit scary' is the definition.
I can't tell whether this defines the answer.
'a bit scary' is the wordplay.
'bit' becomes 'i' (resembles r, a binary digit or bit).
'scary' becomes 'ry' (I can't justify this - if you can you should believe this answer much more).
'a'+'i'+'ry'='AIRY'
Can you help me to learn more?
(Other definitions for airy that I've seen before include "open to the sky" , "Light and insubstantial" , "Well ventilated; insubstantial" , "Old astronomer" , "Spacious - aerial" .)
