Where does “マクる” come from?

マクる (Japanese) comes from Japanese る, from Japanese いる, from Old Japanese いる.

マクる (Japanese): to eat at McDonald's

Definitions

  1. to eat at McDonald's

Ancestry of “マクる”, step by step

マクる traces back through two separate lines of ancestry.

via Japanese る

StepLanguageWordMeaning
1JapaneseるA general method to form verbs (as a godan katsuyō verb). Much less productive than する
2Japaneseいるto exist, to be
3Old Japaneseいる—

via Japanese マク

StepLanguageWordMeaning
1Japaneseマク—
Every word from Old Japanese いる →Every word from Japanese いる →Every word from Japanese る →