a boastful, arrogant, or loud-mouthed person who talks excessively

自慢屋, ほら吹き
to change one's opinions about something often and quickly, sometimes being enthusiastic and other times indifferent or negative

気分屋で意見が変わりやすい, 意見がすぐ変わる
to arrive unexpectedly or suddenly, often without prior notice

突然現れる, 予告なしに到着する
to get rid of one's strong feelings, particularly by talking in an angry way
to become really annoyance to the point where one might do something stupid to get rid he anger or frustration
to become suddenly very angry, often to the point of shouting or behaving in an aggressive manner

キレる, 怒りを爆発させる
to reveal a person's identity or intentions

正体をばらす, 身元を明かしてしまう
to deeply astonish or amaze someone, often by presenting them with something unexpected or extraordinary

度肝を抜く, 驚嘆させる
to praise one's own abilities or accomplishments, often in an exaggerated way

自慢する, 自慢, 鼻にかける
to fail to control one's anger

キレる, 怒りを爆発させる
to slowly disappear or become less noticeable

過ぎ去る, 徐々に消える
to kill someone with a gun or other weapons

殺す, 撃ち殺す
to make a mess of or ruin something, often through reckless actions or poor decision-making

台無しにする, めちゃくちゃにする
to make known an unpleasant truth about something

不都合な真実を暴く, 隠された問題を明るみに出す
to inform the authorities about something secret or the breach of legalities, particularly because one is morally obliged to do so

不正を通報する, 内部告発する
to become extremely angry and lose control

爆発する, キレる
(of two or more people) to get into a serious verbal argument or begin attacking each other physically because of a prior disagreement

殴り合いになる, 取っ組み合いになる
something that is easy to do or accomplish

朝飯前, 簡単なこと
to keep talking with a person about no particular subject

とりとめなく話す, なんとなくおしゃべりする
used to imply that even in difficult or negative situations, there is often something positive or hopeful to be found
tremendously excited about something

有頂天, 舞い上がっている
to be in a constant state of bad luck, negativity, or a depressed mood
used to emphasize a question or statement, showing surprise or confusion
to have some understanding or knowledge of something
confused and unable to think clearly

頭がぼんやりしている, 頭が回らない
used to express surprise, shock, or astonishment, often in response to something unexpected or difficult to believe

なんてことだ!, まあ!
used to describe something that is extremely delightful, blissful, or perfect, often invoking a sense of pure enjoyment or pleasure

天国のような, 神聖な
used to express surprise, disbelief, or astonishment, often in a dramatic or emphatic way

なんてことだ!, まあ!
used to express surprise, astonishment, or sometimes dismay, often in a humorous or old-fashioned

ベッツィへ天よ!, 神様ベッツィへ!
in a state where one is experiencing outmost joy and happiness

有頂天, 舞い上がっている
to try extremely hard and do everything that one is capable of in order to succeed in something

全力を尽くす, あらゆる手を尽くす
used to emphasize the degree or extent of something, often in a hyperbolic or exaggerated manner

めっちゃ, 超
no matter how many obstacles one might face or how hard achieving something gets

何があっても, どんな困難があっても
used as a harsh command expressing strong anger, disdain, or rejection toward someone

地獄へ行け!, 地獄へ行け!
used to emphasize the intensity or speed of something

必死に, めちゃくちゃ
to experience something that is extremely painful or difficult, particularly for a long time

地獄のような苦しみを味わう, ひどい苦難をくぐり抜ける
used to express surprise, confusion, or frustration about an unexpected situation

一体何だ?, 何が起こっているの?
used to express disbelief in something happening

絶対にない, ありえない
to expose one's buttocks, typically as a prank or for humorous effect

お尻を見せる, 月
used for saying that something can only happen on very rare occasions

めったにない, ごくたまに
to make promises that are impossible to be fulfilled or be kept

できもしない約束をする, 大風呂敷を広げる
to be smart or experienced enough to find one's way out of a problematic situation

自分で切り抜けられる, 機転が利く
to ruin what someone has planned or not allow them enjoy something

水を差す, 楽しみにケチをつける
a time of financial difficulty or a period of challenge

まさかの時, 困った時
refusal or cancellation of an invitation, offer, or plan with intention of accepting it or doing it at another time instead

また今度, 次の機会に
used to suggest that when something bad happens, other bad things often happen in quick succession or in large numbers, making the situation seem even worse
an attempt to persuade someone to do or believe something using deception or flattery

言葉でだます, 巧妙なごまかし
to eat a large amount of food, often with enthusiasm
to act in a violent or angry way, showing strong emotion

怒って出て行く, 激怒する
to achieve sudden and overwhelming success, popularity, or control
used to refer to someone with fat or large thighs

太ももが太い, 太ももが太い
a person who is only a friend during good times and is not supportive or reliable during difficult or challenging times

都合のいい時だけの友達, 調子のいい時だけの仲間
feeling unwell or slightly ill

体調不良, 気分が優れない
to release gas from one's bowels through one's anus

おならをする, 屁をする
the renewal of one's energy or endurance that allows one to continue or start over a physical exertion

第二の息, 元気の回復
to become aware of a piece of information that has been long kept a secret

情報を嗅ぎつける, 内密な話を耳にする
to do something, particularly something others do not expect, in order to make them feel less confident or important

鼻を折る, 勢いをくじく
to become out of breath, usually from physical exertion
to make a lot of fuss or unnecessary noise about something trivial or insignificant
a fast-paced, short, and often hectic journey or series of events, typically involving multiple stops or activities in a short time

疾風怒濤のツアー, 駆け足の旅
