The compound 'truth-seeking' is a modern English formation built from two robust Germanic roots. 'Truth' originates from the Old English 'trēowth', a derivative of 'trēowe' (faithful, true), which itself is traceable to the Proto-Indo-European root deru-/dreu-, denoting firmness and steadfastness, concepts foundational to truth. 'Seek' comes from Old English 'sēcan', from Proto-Germanic sōkijaną, meaning to follow a path or track, related to the PIE root sāg- (to seek out). The suffix '-ing' converts the verbal action into a descriptive quality. Thus, the literal 'searching for steadfastness/firm reality' elegantly encapsulates the modern abstract meaning of an investigative pursuit of factual accuracy and understanding.

Structure: truth (true state) + seek (search for) + ing (adjective/noun suffix) - truth: From Old English 'trēowth', meaning 'faithfulness, constancy'. In this compound, it functions as a noun meaning 'the true facts or state of a matter'. - seek: From Old English 'sēcan', meaning 'to visit, pursue, inquire after'. In this compound, it functions as a verb root meaning 'to search for, try to find'. - ing: A suffix of Old English origin, used here to form a compound adjective (and by extension, a noun) from the verb 'seek', indicating the action or quality of the preceding elements.