(US, idiomatic) A long and uncommon word used in place of a shorter and simpler one with the intent to appear sophisticated.

(simile) Faithful to a promise one has made.

An expression of surprise or astonishment.

(UK, informal) To consider one's attitudes or behaviour with a view to reform.

(idiomatic) To make some information more widely known.

Alternative form of ten-dollar word

(linguistics) A word composed of two or more stems used as a predicate (word indicating sentence or predication is a statement that may be true or false). in English, it may or may not have a space or hyphen.

To make a promise.

To say a single word; to speak at all.

To speak favourably of someone to someone else, in order to help them out.