saturate

The story

1. Latin · derived fromsaturātus
2. Middle English · inherited fromsaturat(e)“satiated, satisfied”
3. English todaysaturate

The adjective is first attested in the second part of the 15ᵗʰ century, in Middle English, the verb in 1538, the noun in 1921; inherited from Middle English saturat(e) (“satiated, satisfied”), borrowed from Latin saturātus, perfect passive participle of saturō (“to fill, satisfy, quench”) (see -ate (etymology 1, 2 and 3)), from satur (“full”) + -ō (verb-forming suffix).