Absence and nothingness with 無
無 means a state where an object or action lacks purpose, value, or effect. It expresses that no matter how hard you try, it will not lead to results, or that something makes no sense (nonsense).
Ability and Knowledge
無能 (Incompetent)
無能 means incompetent, incapable, or inefficient. It describes a lack of ability, talent, or usefulness, and can refer to the state itself or a person who lacks these qualities.
It combines 無 (nothing) with 能 (ability) to show lack of ability.

Police detective Yokomizo isn’t about to let Sasai, his prime murder suspect, leave. Sasai reminds the officer that he has photographic proof that he wasn’t near the victim at the time of the murder. He calls for Detective Mouri to back him up.
- 笹井
( : - 「名探偵
( のあなたからもいってやってくださいよ。 この刑事( がいかに無能( かという事( を…」- “You, the great detective, should tell him yourself. Just how incompetent this police detective is...”
Attention and Distinction
無差別 (Indiscriminate)
無差別
It combines 無 (without) with 差別 (distinction) to show action taken without making distinctions.

Sonoko is invited to a band’s after party. During the get-together, the band’s singer Tatsuya eats a rice ball only to collapse and die. The police are called in, and Inspector Megure discovers the victim was poisoned. He accuses the man who prepared the food, but Conan bites into a rice ball to show it’s safe. The victim’s manager, Mari, agrees.
- 麻理
( : - 「無差別
( 殺人( ならともかく、たまたま達也( が食( べたオニギリだけに、あらかじめ毒( を仕込( むのは不可能( じゃありません?」- “If it were indiscriminate murder, that's one thing but since it was just the rice ball Tatsuya happened to eat, wouldn't it be impossible to poison it beforehand?”
- 目暮
( : - 「た、確
( かにそうだが…」- “Th-that's true.”
Limits and Possibility
無理 (Impossible)
無理
It combines 無 (without) with 理 (reason) to show something without reasoning.

Takeo hopes to get into the same college as his girlfriend, Rinko. Going into a mock exam, he listed the top college Rinko is aiming for. However, the results came back saying it would be impossible for him to get into Rinko’s top choice.
Rinko tells Takeo she didn’t do well for that college either, so they should both aim for her second choice. Takeo asks if Rinko is okay with giving up on her top choice.
- 凛子
( : - 「あはは あれはいーのいーの」
- “Ha ha, I'm okay with that.”
- 「だってたけおくんは絶対
( ムリだもん」- “I say that because it'd be impossible for you to go, Takeo.”
- “Ha ha, I'm okay with that.”
Rinko’s first choice was a women’s college, making her boyfriend, Takeo, ineligible to attend.
Presence and Omission
無事 (Safety)
無事
It combines 無 (without) with 事 (incident) to show being without incident.

Ninako is on the train after school when she notices Ren, a popular boy from school, sleeping a few seats down. The boy suddenly wakes as the train comes to a stop, and he hurries to get off, accidentally knocking Ninako’s phone from her hand. It falls to the floor, and the phone strap charm breaks. Ren misses his exit as he stops to apologize to Ninako, saying he’ll replace the charm.
- 仁奈子
( : - 「だっ 大丈夫
( ですっ」- “I---it's all right.”
- 「ケータイは無事
( だし!」- “Since my cell phone is safe!”
- 「それにこのストラップただのジュースのおまけだし」
- “Furthermore, this strap is just a juice prize.”
- 「しかももうだいぶ前
( 〜〜〜〜のやつで古( いから」- “Plus, it's from way back when, so it's old.”
- “I---it's all right.”
無断 (Without permission)
無断
It combines 無 (without) with 断 (decision) to show something done without approval.

Sazanka sneaks out of class, leaving the teacher to send Asagao to bring her back. As Asagao chases Sazanka across the rooftops near the upper grade classroom, Tsubaki spots them. She meets them up on the roof and recites the school’s first rule.
- ツバキ:
- 「ひとつ。無断
( で勝手( な行動( をとるべからず。」- “One: Doing as you please without permission is strictly forbidden.”