Turn, Turned, Turned; Love, Loved, Loved.
Verbs, which depart from this rule, are called irregular, of which I believe the subsequent enumeration to be nearly complete[72].
These, as Lowth observes, are generally not only defective, but also irregular, and are chiefly auxiliary verbs.
The distinctive character of impersonal verbs has been a subject of endless dispute among grammarians. Some deny their existence in the learned languages, and others as positively assert it. Some define them to be verbs devoid of the two first persons; but this definition is evidently incorrect: for, as Perizonius and Frischlinus observe, this may be a reason for calling them defective, but not for naming them impersonal verbs. Others have defined them to be verbs, to which no certain person, as the subject, can be prefixed. But with the discussion of this question, as it respectsthe learned languages, the English grammarian has no concern. I proceed, therefore, to observe, that impersonal verbs, as the name imports, are those which do not admit a person as their nominative. Their real character seems to be, that they assert the existence of some action or state, but refer it to no particular subject. In English we have very few impersonal verbs. To this denomination, however, may certainly be referred,it behoveth,it irketh; equivalent to,it is the duty,it is painfully wearisome. That the former of these verbs was once used personally, we have sufficient evidence; and it is not improbable that the latter also was so employed, though I have not been able to find an example of its junction with a person. They are now invariably used as impersonal verbs. We cannot say,I behove,thou behovest,he behoves;we irk,ye irk,they irk.
There are one or two others, which have been considered as impersonal verbs, in which the personal pronoun in the objective case is prefixed to the third person singular of the verb, asmethinks,methought,meseems,meseemed; analogous to the Latin expressionsme pœnitet,me pœnituit.You thinketh,him liketh,him seemeth, have long been entirely obsolete.Meseemsandmeseemedoccur in Sidney, Spenser, and other contemporary writers; but are now universally disused. Addison sometimes saysmethoughts, contrary, I conceive, to all analogy.