Raddest

Part of speech: adjective

Definitions

1. Slang for the most impressive, excellent, or cool, used to praise something as the best of its kind
2. Informal superlative meaning the coolest or most awesome thing among a group of similar things
3. Describing something as the most totally excellent or fantastic, a casual term of enthusiastic approval

Etymology: "Raddest" is the superlative of "rad," so its story is really the story of "rad." That word began in American English in the 1960s as slang for something excellent, a sense borrowed from the earlier "radical," which had itself been used as a slang term of approval for things that were extreme, bold, or unconventional. The shortened form took on that enthusiastic, slightly countercultural glow and spread through youth speech. Adding "-est" to "rad" to get "raddest" follows the pattern English uses for any one-syllable adjective, so the form is regular rather than a special creation. Its meaning is the top degree of the same approval: the coolest of a group, the best of all. Because it is a superlative, the form usually appears with a plural or collective noun in view, as in saying one thing is the raddest of several.

Synonyms: awesome, excellent, cool, great, radical

Antonyms: lame, awful, terrible