'assaulters' originates from Middle English and Old French, specifically from Old French 'assaulter' (derived from earlier forms of 'assaut' / 'assailer'), where the root comes from Latin elements 'ad-' (toward) and 'salire' (to leap) meaning a sudden attack.

'assaulters' developed via Old French 'assault' / 'assaut' into Middle English 'assault' and the agent-form 'assaulter' (one who assaults), and later the regular English plural form produced 'assaulters'.

Initially related to the idea 'to leap upon' or 'a sudden attack,' it evolved into the recorded meaning 'a person who attacks someone,' typically referring to physical or sexual attacks.