(rare) An increase; growth. (rare) An increment; an addition; augmentation.

Is Increasement a correct word?

noun rare An increase ; growth .

Is Increasement a noun?

Increase can also be used as a noun referring to a rise or growth in something, as in We are experiencing an increase in applicants. It can also refer to the amount by which something has increased, as in The increase was $5,000 per year. ... The opposite of increase as both a verb and a noun is decrease.