Here are some possible words:
backpack
baldrick
bankbook
bareback
basilisk
beadwork
billhook
Bismarck
blowback
bluebook
bobolink
bodywork
bookmark
bookrack
bootjack
bootlick
bullneck
bushwack
busywork
betaareacodacolacomadatadivagalahulajavalavanovapicapitapumasagatubazona
Sloe.
well you only need one more letter if it's 4 letters and starting with you... try the alphabet
emue
inese Dynasty of 4 letters starting with the letter H?
Anna
amok
quos
inch
Mump.
Nonexistant
buzzzz:)
June
Quea! Probly
Alae
jazz
Avid