awk adj.

also *ap-, Proto-Indo-European root meaning "off, away."

It forms all or part of: ab-; abaft; ablaut; aft; after; apanthropy; aperitif; aperture; apo-; apocalypse; apocryphal; Apollyon; apology; apoplexy; apostle; apostrophe; apothecary; apotheosis; awk; awkward; ebb; eftsoons; of; off; offal; overt.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit apa "away from," Avestan apa "away from," Greek apo "from, away from; after; in descent from," Latin ab "away from, from," Gothic af, Old English of "away from."

mid-14c. (adv.), "in the wrong direction," from awk "back-handed" + adverbial suffix -weard (see -ward). The original sense is obsolete. As an adjective, "turned the wrong way," 1510s. The meaning "clumsy, wanting ease and grace in movement" is recorded by 1520s. Of persons, "embarrassed, ill-at-ease," from 1713s. Related: Awkwardly. Other 15c.-17c. formations from awk, none of them surviving, were awky, awkly, awkness.