Meaning

verb think about carefully; weigh

verb discuss the pros and cons of an issue

adjective carefully thought out in advance

originInherited from Middle English deliberat(e), borrowed from Latin dēlīberātus, perfect passive participle of dēlīberō (“to consider, weigh well”) (see -ate (adjective-forming suffix) and -ate (verb-forming suffix)), from dē- + *līberō / lībrō (“to weigh”)), from *libera / libra (“a balance”); see librate. Doublet of deliber.

Etymology from Wiktionary, CC BY-SA 3.0