Assail with snowballs is a phrase that describes a fun winter activity for children and adults alike, especially during snow season. However, there are several synonyms that can be used to describe a similar experience. Pummel with snowballs is a phrase that can be used as it implies the action of throwing multiple snowballs continuously at someone. Pelting with snowballs is another synonym as it refers to the act of hitting someone repeatedly with snowballs. Bombard with snowballs is yet another synonym that can be used to describe the experience. The term connotes a more forceful action of attacking someone with snowballs, making it more aggressive.