HackerVoca

: astute, sharp, acute, keen, penetrating
shrink : contract, shrivel, diminish, decrease, dwindle
shun : elude, avoid, evade, escape
shy : bashful / / adjective
easily embarrassed in social situations; shy: a bashful smile | Many men are still bashful about discussing their feelings.
bashfully adverb
bashfulness noun [uncountable]
, reserved, timid, coy // adjective

1 pretending to be shy in order to attract interest, or to avoid dealing with something difficult: She gave him a coy smile.

2 unwilling to give information about something

[+ about]: Tania was always coy about her age.
coyly adverb
coyness noun [uncountable]