timorous (adj.)

• afraid
• bashful
• chicken
• chickenhearted
• confused
• conscious
• cowardly
• coy
• daunted
• demure
• diffident
• dismayed
• fainthearted
• fearful
• fearing
• fearsome
• funky
• goosy
• inarticulate
• intimidated
• jumpy
• lily-livered
• mousy
• nervous
• panicky
• scary
• self-conscious
• shaky
• shamefaced
• shivering
• shivery
• shrinking
• shuddering
• shy
• sissified
• sissy
• skittish
• soft
• timid
• trembling
• tremulous
• trigger-happy
• unmanly
• unmanned
• weak
• weak-kneed
• white-livered
• yellow