Ad hoc.
The Latin phrase meaning "for example" is exempli gratias, abbreviated e.g. The phrase's literal meaning is "for the sake of example."
a priori
a fortiori
are your meaning Per se? It's a Latin phrase meaning "in itself"
The Latin phrase for "always truthful" is "semper verus." This phrase combines "semper," meaning "always," with "verus," meaning "true" or "truthful." It is often used to convey unwavering honesty or integrity.
toto caelo
tabula rasa
"Holy union"
The Latin word meaning Perfect is Perfectus or absolutus.
SPQR is the Latin abbreviation for the phrase Senatus Populusque Romanus, meaning the Senate and Roman People.
toto caelo
Carus (-a, -um), meaning 'beloved' or 'dear.'