Which French adjectives begin with the letter Y?

"Y" is not a common French letter, most of these Words have a foreign origin:

yack

yang

yard

yacht

yacht-club

yankee

yaourt

yaourtière

yatagan

yearling

yéménite

yen

yeuse

yeux

yéti

yé-yé

yèble

Yiddish

yin

ylang-ylang

yoga

yogi

yoghourt

yogourt

yohimbehe

yole

yonnais

yougoslave

yourte

youyou

yo-yo

ypérite

yponomeute

ypréau

ysopet

ytterbium

yttria

yttrifère

yttrium

yttrique

yucca