sudden

Từ điển Oxford Learners Wordfinder Dictionary

adjective

happening without warning or in a short space of time (Freq. 33)
- a sudden storm
- a sudden decision
- a sudden cure
• Ant:
gradual
• Similar to:
abrupt, choppy, jerky, emergent, explosive,
fulminant, sharp
• See Also:
fast
• Derivationally related forms:
suddenness