be in heaven
be pleased
beam
birr
bombilate
bombinate
boom
bum
burr
buzz
delight
die with delight
drone
feel happy
go into raptures
hum
joy
laugh
sing
smile
take great satisfaction
thrum
tread on air
whir
whiz
pur
go
resonate
sound
vibrate
purred
purring
purrs
chirp
chuckle
contralto
croak
drawl
growl
grunt
gurgle
hiss
murmur
rasp
rumble
snore
throb
timbre
undertone
whine
Burr
Fleur
Fur
Kerr
Monsieur
Shir
Sir
Spur
Thur
Ur
blur
bur
chauffeur
cofer
concur
confer
connoisseur
cur
defer
demur
der
deter
entrepreneur
err
fer
fir
fleur
fur
gurr
her
hur
incur
infer
inter
ker
liqueur
mer
murr
myrrh
occur
per
pere
prefer
recur
refer
reoccur
restauranteur