According to the dictionary, -ment can refer to an action, a place, or a state resulting from an action. This definition is useful to know because -ment functions as a suffix.
verb.
prefix.
root.

Explanation:

the kind of action or activity proper to a person, thing, or institution; the purpose for which something is designed or exists; role.

any ceremonious public or social gathering or occasion.

a factor related to or dependent upon other factors:Price is a function of supply and demand.

Mathematics.

Also called correspondence, map, mapping, transformation. a relation between two sets in which one element of the second set is assigned to each element of the first set, as the expression y = x2; operator.

Also called multiple-value function. a relation between two sets in which two or more elements of the second set are assigned to each element of the first set, as y2 = x2, which assigns to every x the two values y = +x and y = −x.

a set of ordered pairs in which none of the first elements of the pairs appears twice.

Suffix

Explanation:

It is added to the end of a word.

being untruthful

eating too much

overstaying one's welcom

this is that correct answer.