Some cases of {{tp|monsutatesu}} are from using a word in a different [[part of speech]], then adapting that meaning back into the original part of speech.
:For example, {{tp|[[pu]]}} [[Toki Pona Dictionary (pu)|defines]] {{tp|[[moku]]}} as a verb meaning "to eat". When used as a noun, it is interpreted as something that is eaten: "food". If this noun sense is used as a verb, it means "to be food", with the inverse relation of its definition.