A lot vs. Alot: 9 Grammatical Pitfalls
1620s, from Latin liberatus, past participle of liberare "set free," from liber "free" (see liberal). Meaning "to free an occupied territory from the enemy" (often used ironically) is from 1942. Related: Liberated; liberating.
To steal or appropriate, originally something in conquered enemy territory (WWII Army)