"extinction of rights of a person sentenced to death or outlaw," mid-15c., from O.Fr. ataindre
"to touch upon, strike, hit, seize, accuse, condemn" (see attain
). O.Fr. infinitive used as a noun. Latin attingere
had a wide range of meanings, including "to attack, to strike, to appropriate, to manage," all somehow suggested by the literal sense "to touch."