with all one's heart
heartwhole
from the heart
sincereness
leal
devout
heartfelt
earnest
dear
sincerely
unshammed
direct
in earnest
unfeigningly
unfeignedly
truly
body and soul
from the bottom of one's heart
oversincere
real
unpretended
man-to-man
fit to burst
earnesty
straightface
authentically
forehanded
full-hearted
genuinely
stand-up
unfeigned
true-bred
unfeigning
deedy
trueheartedly
for real
wholeheartedness
heartiness
nice and
sincerity
earnestness
seriousness
bona fide
full-heartedly
open-faced
gratifying
plain-spoken
insincerely
bona fides
fairly