simple verb
Definition - A verb in its most reduced form, i.e. without any prefixes, suffixes, or infixes.

1. As opposed to a compound verb, which has an attached particle.

Example -

(1) rise (simple verb) and arise (compound form)
(2) speak (simple) and bespeak (compound)

Oxford English Dictionary -
The term's first citation is from 1530:
"Je prens is a symple whiche hath for his compoundes je reprens [etc.]."
(Palsgr. Introd. p. xxxi, 395)

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