Synonyms for Gauche:

adj.

all (adjective)
unpolished, graceless.
tactless, unsophisticated (adjective)
clumsy, ill-mannered, heavy-handed, inelegant, awkward, maladroit, graceless, inept, unpolished, bumbling.
unskillful (adjective)
bumbling, awkward.
vulgar (adjective)
unpolished.

n.

ill-mannered, impudent, impolite, insolent, abrasive, rude, impertinent, offensive, smart, discourteous. clumsy, indelicate, tactless, impolitic, maladroit, untactful, ability, undiplomatic, brash, courtesy, Unpolitic. bumbling, awkward, unskillful, inept, heavy-handed. gauche (noun)
graceless, unpolished, inelegant.
uncouth (noun)
awkward, clumsy, tactless, inept.

Other synonyms:

bumbling, undiplomatic, Unpolitic, untactful. heavy-handed, brash. impolitic. clumsy, unskillful, indelicate. awkward
inept.
boorish
rude.
clumsy
maladroit.
undiplomatic
tactless.
Other relevant words:
clumsy, impolitic, graceless, rude, bumbling, impertinent, brash, untactful, inept, indelicate, impolite, unskillful, heavy-handed, undiplomatic, awkward, ill-mannered, maladroit, Unpolitic, discourteous, tactless.

Usage examples for gauche

  1. Thus at this moment he looked distinctly gauche though not without dignity, as, his back slightly bent, his left arm outstretched, he waited until Lydie chose to place her hand on his sleeve. – Petticoat Rule by Emmuska Orczy, Baroness Orczy
  2. When the infanta learned that her father had consented to her marriage with Philippe, she said to herself: " If I can find some defect in Philippe that shows that he's gauche or avaricious, he will never be my husband. – The White Knight: Tirant lo Blanc by Joanot Martorell and Marti Johan d'Galba