Japanese symbol for “unassailable”
鉄壁
てっぺき
Romaji: teppeki
iron wall; impregnable fortress
In Japanese, unassailable is 鉄壁, read てっぺき (teppeki).
Before using these characters for a tattoo, check them with a native speaker. Dictionary words often have several meanings, and the right choice depends on context.
Meanings
- n iron wall; impregnable fortress
- adj-no impregnable; invulnerable; unassailable; cast-iron
Kanji and stroke order
Other Japanese words for “unassailable”
| Word | Reading | Meaning |
|---|---|---|
| 要害堅固 | ようがいけんご yougaikengo | (a fortress being) impregnable; unassailable |
| 金城鉄壁 | きんじょうてっぺき kinjouteppeki | impregnable; invulnerable; unassailable |
| 鉄桶 | てっとう tettou | impregnable; impenetrable; unassailable |
Related words
Words that share a kanji.
| Word | Reading | Meaning |
|---|---|---|
| 鉄道 | てつどう tetsudou | railroad; railway; rail transport |
| 地下鉄 | ちかてつ chikatetsu | subway; metro; underground (railway) |
| 国鉄 | こくてつ kokutetsu | national railway |
| 鉄骨 | てっこつ tekkotsu | steel frame; steel beam; steel girder |
| 鉄筋 | てっきん tekkin | rebar; (iron) reinforcing bar; reinforcing steel |
| 私鉄 | してつ shitetsu | private railway |
| 壁紙 | かべがみ kabegami | wallpaper |
| 障壁 | しょうへき shouheki | enclosing wall; boundary fence |
Data: JMdict (CC BY-SA 4.0); KANJIDIC2 (CC BY-SA 4.0); KanjiVG (CC BY-SA 3.0); wordfreq (CC BY-SA 4.0 (data)). Retrieved 2026-10-22.