the word 'whoever' is a compound formed in middle english from the fusion of the interrogative pronoun 'who' and the adverbial particle 'ever'. 'who' derives from proto-germanic hwaz, from the proto-indo-european interrogative stem kʷo-, which forms the basis for question words across many indo-european languages. the suffix 'ever', with its sense of 'any' or 'at all', was appended to create an indefinite and emphatic form. this construction follows a common pattern in english, where 'ever' is added to interrogatives (e.g., whatever, wherever) to generalize or universalize their reference. thus, 'whoever' logically evolved from meaning 'who at any time' to its modern abstract senses of 'any person who' or 'no matter who'.

Structure: who (interrogative pronoun) + ever (adverbial suffix) - who: from old english hwā, of germanic origin; related to dutch wie and german wer. functions as the interrogative and relative pronoun. - ever: from old english ǣfre, of uncertain origin, possibly related to ā in āfe (always) + feor (far). functions as an adverbial suffix meaning 'at any time' or 'in any case'.