Englishfor English speakers
most
Determiner
—
The majority of; much of; > 50%.
She does the most cleaning, but the least cooking.
—
The largest amount of.
Bob knows the most about cooking.
most
Adverb
—
Having the largest amount of a characteristic in a group.
You must ask yourself what is most important.
Tony is the most successful.
—
To a large degree; very.
That is most unusual.
caustic
—
noun
any chemical substance that burns or destroys living tissue
—
adjective
of a substance, especially a strong acid; capable of destroying or eating away by chemical action
—
adjective
(= acerbic, acid, acrid, bitter, blistering, sulfurous, vitriolic)
harsh or corrosive in tone
an acerbic tone piercing otherwise flowery prose
a barrage of acid comments
her acrid remarks make her many enemies
bitter words
blistering criticism
caustic jokes about political assassination, talk-show hosts and medical ethics
a sulfurous denunciation
a vitriolic critique