Lating was the language of the ancient Romans. Nowadays, few people in Europe elsewhere learn Latin, but until the past 70 years or so, it was a language learn I virtually every educated person.
Here are some Latin expressions that are part of the English language ad hoc: Intended for a particular purpose ad infinitum: for ever
ad nauseam: to the point of making one sick
bona fide: genuine
Curriculum vitae: a summary of a person’s qualifications and career, used to support an application for a job.
De facto: in practice
De jure: by right
Et cetera: and the rest
Exempli gratia: for the sake of an example, generally abbreviated to e.g. ex officio: by the virtue of one’s position
Id est: that is, often abbreviated to i.e impromptu: unprepared in extremis: in extreme conditions persona non grata: an unwelcome person ultra vires: beyond one’s powers, said when a person in authority does something which he is not allowed to do.