Literal Meaning is “From stronger.”
An a fortiori argument is an “argument from a stronger reason”, meaning that because one fact is true, that a second related and included fact must also be true. If something less likely is true, then something more likely will probably be true as well.
Judicial Pronouncement
People’s Union for Civil Liberties and Ors. vs. Union of India(UOI) (16.12.2003 – SC)
“63.”If the recording of confession by police is found to be necessary by Parliament and if it is in tune with the scheme of law, then an additional safeguard under Section 32(4) and (5) is a fortiori legal. In our considered opinion the provision that requires producing such a person before the Magistrate is an additional safeguard. It gives that person an opportunity to rethink over his Confession.”
