Anglo-Latin

Ad hoc - for this purpose
et cetera - and more 
exempli gratia - for example
nota bene - Note well
tenet(singular), tenentes(Multiple) - core belief(s)
censure / proscribe - condemn / forbid
Sub rosa - In private/in secret
Quid pro quo - something given in return
Deus ex machina - “god from the machine,” an unexpected resolution

Credo - I believe
Locus - place
Veritas - truth


NOT LATIN BUT STILL FUN

dord - dense/density
Agog - eager or excited
Ugsome - disgusting or loathsome


ARCHAICS

Thy -  Posses.
Thine - Posses. Before Vowel
Thou - Subject
Thee - Object
Hast - "have" only after a TH** word e.g. "Thou hast to jest"
Art - "are" only before or after TH** word e.g. "Thou art", "Art thou"

Asp - Small, venemous snake(Generic, not refering to a specific snake)
Fudgel - to pretend to do work while actually acoomplishing nothing
Latibulate - to hide in a corner in order to escape (Something)


EXAMPLES:

Nota bene, credo thy mother is of the utmost dordness - Sub rosa I say she is quite so; exempli gratia: the veritas is thine ancestors are the utmost ugsome asp.