Such verbs are called intransitive (not crossing over). Hence
Definition.
205. An intransitive verb is one which is complete in itself, or which is completed by other words without requiring an object.
Study use, not form, of verbs here.
206. Many verbs can be either transitive or intransitive, according to their use in the sentence, It can be said, "The boy walked for two hours," or "The boy walked the horse;" "The rains swelled the river," or "The river swelled because of the rain;" etc.
The important thing to observe is, many words must be distinguished as transitive or intransitive by use, not by form.
207. Also verbs are sometimes made transitive by prepositions. These may be (1) compounded with the verb; or (2) may follow the verb, and be used as an integral part of it: for example,—
Asking her pardon for having withstood her.—Scott.
I can wish myself no worse than to have it all to undergo a second time.—Kingsley.
A weary gloom in the deep caverns of his eyes, as of a child that has outgrown its playthings.—Hawthorne.