Simplify

google

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mid 17th century: from French simplifier, from medieval Latin simplificare, from Latin simplus (see simple).

wiktionary

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From the French simplifier.

etymonline

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simplify (v.)

1650s, from French simplifier "to make simpler" (15c.), from Medieval Latin simplificare "to simplify," from Latin simplex "simple" (see simplex) + combining form of facere "to make" (from PIE root *dhe- "to set, put"). Meaning "to make easier to do" is from 1759. Related: Simplified; simplifying.