I wasn't sure how many words you wanted:
You
Bayou
Plateau
Five letter words ending in U are bayou and snafu.
UlamaUlemaUltraUlulaUnciaUrmiaUvulaUzema
Plateau, caribou, jujitsu.
doubleyou, cortelyou
sayssawsseesspys
Five letter words ending in U are bayou and snafu.
Some six letter words ending in U are:bureaugateaulandaumilieumuumuu
Gnu. Emu You
undercutunionistuppercut
UlamaUlemaUltraUlulaUnciaUrmiaUvulaUzema
Jammu
doubleyou, cortelyou
Plateau, caribou, jujitsu.
sayssawsseesspys
Some words that end in "qi" are haqi, sufiqi, and Rafiqi.
Four letter words using those letters and ending in 'l' are:haulhealteal
COIN