FIFTH DEFINITION:--"A Verb is a word which signifies _to be, to do_, or _to suffer_"-- _Lowth, Murray, and others_.

NOTE:--"A verb may generally be distinguished by _its making sense_ with any of the personal pronouns, or the word _to_ before it."-- _Murray, and others_.

It is confessedly difficult to give a perfect definition of a _verb_; and if, with Murray, we will have the participles to be verbs, there must be no small difficulty in forming one that shall be tolerable.

Against the foregoing old explanation, it may be objected, that the phrase _to suffer_, being now understood in a more limited sense than formerly, does not well express the nature or import of a passive verb.

I have said, "A Verb is a word that signifies _to be, to act_, or _to be acted upon_." Children cannot readily understand, how every thing that is in any way _acted upon_, may be said _to suffer_.
The participle, I think, should be taken as a distinct part of speech, and have its own definition.