i-adjective
current; hip; trendy; fashionable; stylish
Obsolete slang from the late 1980s to early 1990s, roughly equivalent to 'now' or 'with it'. Cross-referenced with ナウい, which was more common. Rarely used today.
See also: ナウい
その服、すごくいまいね！
That outfit is really trendy!
「今い」って言
I heard the word 'imai' was popular during the bubble era.
Derived from 今 (ima, 'now') with the adjective-forming suffix い, modeled after ナウい (naui). The exact origin is uncertain, but it emerged as youth slang in the late Showa era.