ex post facto law - ⏎
in extremis - in the extreme⏎
ex parte - from [for] one party⏎
extant - existing⏎
in futuro - in the future⏎
fiat - Let it be done.⏎
functus officio - having performed his office⏎
habeas corpus - May you have the body.⏎
ex proprio motu - by [one's] own motion⏎
in pari materia - in the same matter⏎