1) Awkward 2) Clumsy 3) Coarse 4) Indiscreet 5) Inelegant 6) Tacky 1) Awkward 2) Clumsy 3) French word used in English 4) Graceless 5) Inelegant 6) Inept 7) Lacking refinement 8) Lacking social grace 9) Lacking social polish 10) Lacking tact 11) Not refined 12) Not smooth 13) Tacky 14) Totally tacky 15) Unpolished 
[Scheme implementation] Gauche is an R7RS Scheme implementation. It is designed for scripting in a production environment. It is intended to allow programmers and system administrators to write scripts in support of daily operations. Quick startup, built-in system interface, native multilingual support are some of its key design goals. Gauc...
• (n.) Left handed; hence, awkward; clumsy. • (n.) Winding; twisted; warped; -- applied to curves and surfaces.
Gauche (gōsh) noun [ French] 1. Left handed; hence, awkward; clumsy. 2. (Geom.) Winding; twisted; warped; - - applied to curves and surfaces. 
[adj] - lacking social polish
graceless adjective lacking social polish; `too gauche to leave the room when the conversation became intimate`; `their excellent manners always made me feel gauche`