- posse – avail, have influence, to be able
- possum – avail, have influence, to be able, to be capable
- potum – avail, have influence, to be able
- a posse ad esse – from being able to being
- ex post – from after
- ex post facto – from a thing done afterward
- feci quod potui, faciant meliora potentes – I have done what I could; let those who can do better.
- in posse – in potential
- non possumus – not possible
- posse comitatus – to have the right to an armed retinue
- post aut propter – after it or by means of it
- post cibum (p.c.) – after food
- post coitum – After sex
- post coitum omne animal triste est sive gallus et mulier – After sexual intercourse every animal is sad, except the cock (rooster) and the woman
- post festum – after the feast
- post hoc ergo propter hoc – after this, therefore because of this
- post meridiem (p.m.) – after midday
- post mortem (pm) – after death
- Post mortem auctoris (p.m.a.) – after the author's death
- post nubila phoebus – after the clouds, the sun
- post prandial – after the time before midday
- post scriptum (p.s.) – after what has been written
- post tenebras lux, or post tenebras spero lucem – after darkness, [I hope for] light
- Te occidere possunt sed te edere non possunt nefas est – They can kill you, but they cannot eat you, it is against the law.
- velle est posse – "To be willing is to be able." (non-literal: "Where there's a will, there's a way.")
- vero possumus – Yes, we can