Olympian
aloof
arsy-varsy
ass over elbows
back-to-front
backward
backwards
bashful
blank
capsized
chiastic
chilled
chilly
cold
constrained
cool
detached
discreet
distant
everted
expressionless
forbidding
frigid
frosty
guarded
hyperbatic
icy
impassive
impersonal
inaccessible
ingoing
inner-directed
inside out
introspective
introversive
introvert
invaginated
inversed
inverted
modest
offish
outside in
palindromic
remote
removed
repressed
reserved
restrained
resupinate
reticent