Entry 3 senses · 2 variants Webster, 1913 lowdown · low·down · IPA /lˈoʊdˌaʊn/ n. a. 01 n. true confidential information. 1. true confidential information. Syn. details, dope, poop, inside dope, inside information. 02 a. of the most contemptible kind; contemptible; mean; base; vile; -- of people or the actions of people; as, a lowdown sneak thief. 1. of the most contemptible kind; contemptible; mean; base; vile; -- of people or the actions of people; as, a lowdown sneak thief. 2. having the soulful feeling of early blues; -- of jazz. Syn. abject, base, despicable, low, lowdown, miserable, vile. — Syn. -- funky.