uncouth

Meaning

1. Unfamiliar, strange, foreign.
2. Clumsy, awkward.
3. Unrefined, crude.

Synonyms

coarse

vulgar

rough

rude

boorish

clumsy

crude

unpolished

unrefined

ill-mannered

impolite

brusque

awkward

strange

uncivilised

uncivilized

ignorant

common

blunt

raw

unwrought

backward

wild

indecent

uncultured

ugly

odd

uncivil

flat

rustic

rough-cut

gauche

barbaric

harsh

unworked

rather coarse

rather rough

rather rude

Gothic

lack of manners

agrarian

brutish

churlish

cloddish

discourteous

disrespectful

dull

earthy

gross

immoral

imperfect

lowbred

newfangled

philistine

plebeian

rural

savage

slow

slow-witted

unacquainted

undignified

unfashionable

unmannered

unmannerly

unpresentable

unshapely

unsightly

wildness

agrestic

ill-shaped

odd-looking

cubbish

unconversant

unhewn

Pronounced as (IPA)

/ʌnˈkuːθ/

Etymology

Inherited from Middle English: uncouth

Inherited from Old English: uncūþ

In summary

From Middle English uncouth, from Old English uncūþ (“unknown; unfamiliar; strange”), from Proto-West Germanic *unkunþ, from Proto-Germanic *unkunþaz (“unknown”), equivalent to un- + couth.
The modern pronunciation does not show /aʊ/, the usual development of the Middle English vowel from the Great Vowel Shift. It is usually explained as a pronunciation taken from Northern English dialects, which did not undergo the diphthongization of the vowel.