underface

== English == === Etymology === From under- +‎ face. Compare surface. === Pronunciation === === Noun === underface (plural underfaces) The underside or downward-facing surface of an object. Antonym: overface === Verb === underface (third-person singular simple present underfaces, present participle underfacing, simple past and past participle underfaced) (retail) To place an unsufficient quantity of a product range on the shelves. Antonym: overface