1.
super-; ultra-; extremely
Productive prefix meaning 'super-' or 'ultra-'. In compounds it conveys exceeding the normal or expected level, while in casual speech it works as an intensifier roughly equivalent to 'super' or 'really'.
Originally a Sino-Japanese prefix in formal compounds (超音速 'supersonic', 超大国 'superpower'). Since the 1980s also widely used as a casual intensifier attached freely to adjectives and even verbs (超かわいい, 超忙しい).
Formal compounds
Casual usage
In casual speech, 超 feels more youthful than すごく or とても and is common among younger speakers.