突然 is the everyday word for 'suddenly', while 不意 stresses being caught off guard due to a total lack of forewarning.
突然 specifically means 'suddenly, without warning,' while 急 covers a broader range of meanings including urgency, steepness, and speed.
突然 is a neutral, formal word for 'suddenly', while 俄 often carries a nuance of hastiness or lack of preparation.
ぽっかり conveys a sudden, almost eerie appearance or emptiness, while 突然 is the plain, formal word for 'suddenly' used in any context.
突然 describes something abrupt and often externally caused, while ふと describes a soft, internal action or thought that arises without premeditation.
突然 is the common word for 'suddenly', focusing on unexpectedness, while 急遽 stresses hurried action taken in response to urgency.
突然 is the most common, neutral word for 'suddenly' usable in almost any context, while 俄かに is more literary and stresses an unexpected shift in a situation or condition.
突然 is the most common, neutral word for 'suddenly' and can describe any unexpected event, while 唐突 stresses that the action or remark lacked context and felt out of place.
突然 is the neutral, everyday word for 'suddenly', while 俄然 adds a stronger sense of a dramatic or striking shift and can also work as a colloquial intensifier.
突然 is a common adverb/adjective meaning 'suddenly' that can modify verbs directly, while 不慮 is a formal, literary noun modifier used only in set phrases like 不慮の事故.
突然 highlights that something happens unexpectedly, while 急激 highlights how sharp or drastic the change itself is.
突然 is a neutral, formal word for something happening suddenly, while くるり is a mimetic adverb that adds a vivid, quick-turn feel to a sudden change.
突然 is a formal, all-purpose word for 'suddenly' with no physical nuance, whereas がくんと specifically evokes a jolting motion or sudden drop.
突然 describes something happening unexpectedly, whereas 一気に highlights the speed and totality of a sudden change.
突然 emphasizes the suddenness of an event, whereas 思いがけず focuses on how contrary to expectation the event was.
突然 is a more formal, neutral word for 'suddenly', while ひょいと has a lighter, more casual nuance often tied to a quick physical motion.
突然 means 'suddenly' in a general sense with no implication of brevity, whereas さっと suggests the event also passes quickly.
突然 describes something happening unexpectedly or without warning in general, while 一躍 specifically implies a leap upward in status or reputation.
突然 is a more formal, written word for something happening unexpectedly, whereas ぱっと is casual and often paired with visual verbs like 光る or 立ち上がる.
突然 emphasizes the abruptness or suddenness of an event, while 思いがけない emphasizes that it was not anticipated, regardless of how gradually it unfolded.
突然 highlights the abruptness of an event without any warning, whereas たちまち can also describe a quick but expected progression.
