Searching and probing with 探
The kanji 探 has the meanings of search and probe.
At its core, 探 is about reaching into somewhere hidden and feeling around for what is not immediately visible. From that physical image come broader senses like explore, investigate, and detect.
Etymology
This kanji is a phono-semantic compound compound comprised of 扌 (hand) as the semantic component and 罙 (deep; reaching far inward) as the phonetic component. These invoke imagery of a hand reaching deep into a hidden place, feeling around for something out of sight.
The meanings of search and probe are clear from this imagery. If you have to reach inward and test things by touch rather than seeing them directly, you are searching carefully for what is concealed. From this comes the wider sense of explore (searching through unfamiliar territory), investigate (probing for facts), and detect (finding what was hidden).
Exploration and Fieldwork
探検 (Exploration)
探検 means an expedition or exploration into an unfamiliar place. It is used for going into caves, ruins, mountains, or other unknown areas to investigate them directly.
Compared with a simple search, it carries a stronger sense of adventure and firsthand discovery.
It combines 探 (explore) with 検 (inspect or examine) to show exploration through close examination.

During a camping trip, Conan and his friends are out collecting firewood when they happen upon a cave. Seeing the entrance roped off, and an obsure message carved into a rock, Ayumi, Mitsuhiko, and Genta set their gathered sticks on the ground and they head inside.
- コナン:
- 「おいおい お前
( ら…」- “Hey, you guys...”
- 歩美
( : - 「いーじゃない ちょっと探検
( するだけだから…」- “It's okay. We're just going to explore a little.”
Investigation and Detection
探偵 (Detective)
探偵
The word emphasizes following traces and probing beneath appearances until the truth is found.
It combines 探 (search) with 偵 (spy or scout) to show a person who searches out hidden information.

Ran seems angry as Shin’ichi basks in the media attention he’s getting for solving a difficult case. When Shin’ichi asks Ran why she’s angry, she points out that it’s because of Shin’ichi that her father’s been getting fewer case requests.
- 蘭
( : - 「怒
( ってなんかいませんよー!!」- “I'm not at all angry!”
- 新一
( : - 「あれー?蘭
( の父( さん、まだ探偵( やってたのか?」- “Huh? Your dad was still working as a detective?”
- Literal: “Huh? Is it that your dad was still working as a detective?”
- “Huh? Your dad was still working as a detective?”
Search and Inquiry
探索 (Search)
探索
It combines 探 (search) with 索 (seek or search out) to show a systematic search.

Not long after moving to a new town to stay with relatives, Makoto decides to head out for a walk. Her cousin is worried she’ll get lost. Makoto says not to worry, because she’ll have her witch familiar cat, Chito, with her.
- 真琴
( : - 「実
( はチトさん この辺( を色々( 探索( してたみたいで私( よりも土地勘( があるんですよ」- “Actually, Chito seems to have explored this area quite a bit, so she knows her way around better than I do.”