'awaiter' originates from English, specifically the base word 'await' plus the agentive suffix '-er', where 'await' meant 'to wait or be present for' and the suffix '-er' meant 'one who'.

'await' developed in Middle English from forms such as 'awaiten', themselves influenced by Old North French/Old English roots meaning 'to watch' or 'to wait'; the agentive suffix '-er' comes from Old English '-ere' and later produced the English noun 'awaiter'.

Initially it carried the sense 'one who watches or waits'; over time it has retained that core meaning and is used to mean 'a person who waits or is in expectation'.