English
increaser
From increase + -er.
Formed from increase + -er
Proto-Indo-European *ḱer- ‘to grow’
…
Latin crescō ‘to grow’
Latin increscō ‘to increase’
Anglo-Norman encreistre
Middle English encresen ‘to grow or increase’
English increase
Today it means
noun One who, or that which, increases.
Language periods are conventional ranges, not dates for this word.
Etymograph / increaser