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'

Form	Positive	Negative
Dictionary	うっかりする	うっかりしない
Polite	うっかりします	うっかりしません
Past polite	うっかりしました	うっかりしませんでした
Past	うっかりした	うっかりしなかった
Te-form	うっかりして	うっかりしないで
Desire	うっかりしたい	うっかりしたくない
Potential	うっかりできる	うっかりできない
Passive	うっかりされる	うっかりされない
Causative	うっかりさせる	うっかりさせない
Causative passive	うっかりさせられる	うっかりさせられない
Volitional	うっかりしよう
Polite volitional	うっかりしましょう
Imperative	うっかりしろ	うっかりするな
Conditional	うっかりすれば	うっかりしなければ
Tara conditional	うっかりしたら	うっかりしなかったら

Meanings

adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'

carelessly; inadvertently; absent-mindedly

onomatopoeic or mimetic word

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

Related words· 11

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.

Don't confuse with

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.

Meanings

Usage patterns