'sizable' originates from the word 'size' combined with the suffix '-able', indicating capability or worthiness.

The word 'size' evolved from the Old French word 'sis', which meant 'settlement' or 'arrangement', and eventually became the modern English word 'size'.

Initially, 'size' referred to a 'settlement' or 'arrangement', but over time it evolved to refer to the dimensions or magnitude of something.