kept the lid on (verb) gag: silence, stop up
Sinonime: abashed, backward, blushful, blushing, chary,
confused, constrained,
coy,
demure,
diffident,
embarrassed,
humble,
modest,
nervous, overmodest, recoiling, reserved,
reticent, retiring,
self-conscious, self-effacing, shamefaced,
sheepish, shrinking, silent,
timid,
timorous, unassertive, verecund
Antonime: confident, unabashed, unshy