egyikük

egyikük is a Hungarian pronoun meaning "one of them." It is formed from the determiner egyik, meaning "one (of several)," plus the third-person plural possessive suffix -ük, which marks possession by a group referenced earlier. The combination yields a singular reference to a member of that group and is typically used with a preceding definite article (az) to specify which group is meant.

Usage and inflection: The expression refers to a single member of a known set and can function as both subject and object in a sentence. It is declined for case: nominative: egyikük; accusative: egyiküket; dative: egyiküknek; instrumental: egyikükkel. Example: "Két jelölt közül az egyikük nyert." Another: "Az egyiküket megkérdezték." These forms show how the pronoun adapts to different grammatical roles while retaining the sense of "one of them."

Notes: In everyday speech, the form az egyikük (the one of them) is very common, while egyikük alone is used less frequently and relies on context. The word is neutral in tone and gender-free, suitable for both formal and informal contexts. See also: egy, egyik, közül.