suddenly
副词比较级：more suddenly
副词最高级：most suddenly
词形变化：
同义词：
abrupt | unexpected | hasty | impulsive | impetuous | unforeseen | instant | immediate | momentary | curt | surprising | headlong | summary | rapid | swift | quick | speedy | precipitous | fast |
反义词：
gradual |
词义辨析：
同义:
ad.意外地; 忽然
unexpectedly
hastily
abruptly
instantly
immediately
同义参见:
headlong
反义:
ad.突然地
gradually