knothead (noun) dumbo: dummy
Sinonime: abashed,
apologetic,
bashful, blushing, chagrined, compunctious, conscience-stricken,
contrite,
crestfallen, debased, demeaned, discomfited,
disconcerted,
distraught,
distressed,
embarrassed, flustered, guilty,
hesitant,
humble, humbled,
humiliated,
meek, mortified, muddled,
penitent,
regretful,
reluctant, repentant, shamed, shamefaced,
sheepish,
shy,
sorry, stammering, stuttering,
submissiveAntonime: bold,
defiant, immodest, not sorry,
shameless, unregretful, unremorseful, unself-conscious