Answer:

SHY

AnswerCrossword Clue
SHYBashful
SHYShort
SHY" ... twice ..."
SHYNot at all outgoing
SHYUnlikely to mix
SHYAverse to first moves
SHYRetiring
SHYTending to shrink
SHYDiffident
SHYChuck
SHYSelf-conscious
SHYIntroverted
SHYDeficient
SHYFling
SHYLike Laura Wingfield in "The Glass Menagerie"
SHYReserved
SHYShort, in a way
SHYUncomfortable around strangers
SHYSlow to warm up
SHYUneasy around strangers
SHYLikely to shrink
SHYRecoil
SHYNot outgoing
SHYNot forthcoming
SHYA little short, as of money
SHYWithdrawn
SHYInclined to avoid the spotlight
SHYShort at the poker table
SHYDemure
SHYUnassuming
SHYHardly outgoing
SHYLike a wallflower
SHYJust short
SHYNot likely to pipe up
SHYUneffusive
SHYBashful, but not Dopey
SHY"Too ..." ('83 hit for Kajagoogoo)
SHYMove away, as in fear
SHYFar from forward
SHYLike a shrinking violet