Sneezing : make a sudden involuntary expulsion of air from the nose and mouth due to irritation of one's nostrils.Trepidation : a feeling of fear or anxiety about something that may happen.Reversal : a change to an opposite direction, position, or course of action.Hardening : make or become hard or harder.Sternutation : the action of sneezing.Synonym of Sternutation is Sneezing