'asker' originates from English, specifically the word 'ask' + the agentive suffix '-er', where '-er' meant 'one who does (the action)'.

'ask' changed from Old English 'āscian'/'ascian' (meaning 'to ask') and ultimately formed 'ask' in modern English; adding the agentive suffix '-er' produced 'asker'.

Initially it meant 'one who asks' (as the agentive form of 'ask'), and this basic meaning has remained consistent into modern usage.