01 a. Doing or done without sight; not seeing or examining.
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1.
Doing or done without sight; not seeing or examining.[Colloq.]“For to subscribe, unsight, unseen, To a new church discipline.” — Hudibras.“There was a great confluence of chapmen, that resorted from every part, with a design to purchase, which they were to do “unsight unseen.”” — Spectator.
Phrases & compounds
Unsight unseen —
a colloquial phrase, denoting unseeing unseen, or unseen repeated; as, to buy a thing unsight unseen, that is, without seeing it.