Evince incredulity (5)
I believe the answer is:
snort
(Other definitions for snort that I've seen before include "drink, a quickie" , "Inhale a recreational drug" , "Force air out of the nose" , "Take illegal drug" , "Chortle" .)
I believe the answer is:
snort
(Other definitions for snort that I've seen before include "drink, a quickie" , "Inhale a recreational drug" , "Force air out of the nose" , "Take illegal drug" , "Chortle" .)