mucho
/ˈmut͡ʃo/ · A1 · pron
a lot, much
mucho ≈ much: same meaning, nearly the same sound (MOO-cho)
Say much, then add an o: mucho. The two words are not actually related (mucho comes from Latin multus, as in multiple), but the sound match is a reliable hook. Multi- words in English point to the same root.