IMPERSONAL VERBS. MarshLatinIII.wordpress.com. What is an impersonal verb?.
There is a category of verbs in Latin that are often translated in English as impersonal, i.e. as not having a subject (translated with "it"). While these are often translated as impersonals, they often do have a subject in Latin, either unexpressed or something other than a noun.
Words describing the weather that have "caelum" as an unexpressed subject:
licet: "it is allowed" ("I may")
placet: "it pleases" ("I decide")
Many verbs are used impersonally only in certain senses
The Passive of intransitive verbs can be used only impersonally