What does 了不起 (liǎobuqǐ) mean in English?

Card 49NPCR Level 1749/55
CARD49
PROGRESS89%
了不起
liǎobuqǐ
amazing; terrific; extraordinary(Idiom Expression)

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d