うっかり

う

っ

か

り

Common wordJLPTN3Freq.FrequencyTop 10,000

うっかりする · noun or participle which takes 'suru'

Meanings

Describes an unintentional mistake or oversight due to lack of attention; often used with verbs like 忘れる, 言う, or する.

うっかり〈動どう詞し〉to carelessly/inadvertently do something
うっかり宿しゅく題だいを忘わすれてしまった。
I carelessly forgot my homework.
うっかりするto be careless/absent-minded for a moment
うっかりしていて、駅えきを乗のり過すごしてしまった。
I wasn't paying attention and missed my stop.
うっかり口くちを滑すべらせるto let something slip out unintentionally
秘ひ密みつをうっかり口くちを滑すべらせてしまった。
I accidentally let the secret slip.

ついN3
つい describes acting on impulse or habit without meaning to, while うっかり points to a lapse of attention that causes a careless mistake.
ぼんやりN3
ぼんやり describes a vague, dreamy, unfocused state of mind, whereas うっかり refers to a specific careless slip caused by inattention.
ぼやぼやN1
うっかり describes a momentary slip or careless mistake, while ぼやぼや describes a prolonged, hazy state of inattention.
何なに気げなくN1
うっかり emphasizes carelessness or a slip of attention, often with a negative outcome, while 何気なく focuses on the lack of deliberate intent and can be neutral or even positive.

Show 7 more

不ふ注ちゅう意いN1
うっかり is an adverb describing a momentary careless slip, while 不注意 is a noun/adjective describing a general trait or state of carelessness.
誤あやまって
誤って states neutrally that an action was mistaken or accidental, while うっかり emphasizes carelessness or a momentary lapse of attention.
うかうかN1
うっかり describes a brief, one-off slip like forgetting or blurting something out, while うかうか describes a longer stretch of inattentiveness that leaves one exposed to trouble.
ほいほい
うっかり describes an accidental slip or oversight, while ほいほい describes a carefree, thoughtless willingness to do something.
ついつい
うっかり describes a careless slip caused by inattention, whereas ついつい describes giving in to temptation or habit even while aware of it.
そそっかしいN3
うっかり is an adverb describing a single momentary lapse of attention, while そそっかしい is an i-adjective describing someone's general careless personality.
ポロリ
うっかり describes a careless mental lapse in general, while ポロリ specifically describes a word or feeling slipping out unintentionally.

わざとN3
わざと means doing something on purpose, the opposite of うっかり, which means doing something unintentionally through carelessness.

思おもわずN3
うっかり means to carelessly forget or make a mistake, while 思わず means to react instinctively without any element of carelessness.
はっきりN4
うっかり sounds similar to はっきり but means 'carelessly' or 'inadvertently', with no connection to clarity.
ぼーっとN2
うっかり describes a careless slip or accidental mistake, while ぼーっと describes the mental blankness or daze itself, not an error caused by it.

Onomatopoeic or mimetic word; the exact derivation is uncertain, but it likely imitates the sound or feeling of a mental slip.