1
general::
In addition to the idiom beginning with SHY, Also see BRICKS SHY OF A LOAD; FIGHT SHY OF; ONCE BITTEN, TWICE SHY.
American Heritage Idioms
2
general::
adj. VERBS be, feel, look, seem, sound Please don't be shy?I won't eat you! | become, get, go, grow ADV. desperately, excessively, extremely, painfully, terribly, very As a teenager I was painfully shy. | all She went all shy and hid behind her mother. | almost | a bit, fairly, a little, quite, rather, slightly, somewhat | naturally He is a naturally shy, retiring man. | chronically PREP. of I was a bit shy of them at first. | with You don't have to be shy with me, you know., verb ADV. violently PREP. at Her horse shied violently at a gorse bush.
Oxford Collocations Dictionary