Translation guide
The English word 'fortification' can refer to the physical defensive structures themselves, the process of strengthening a place against attack, or the act of strengthening something more abstractly. This guide covers how to express these meanings naturally in Japanese.
Referring to physical military defensive works like walls, ramparts, castles, or fortresses.
General term for a fortress or stronghold. Often used for large-scale military fortifications.
その古い要塞は今は観光名所になっている。
That old fortification is now a tourist attraction.
Specifically refers to castle walls or ramparts, the physical walls of a fortification.
城壁は敵の攻撃から街を守った。
The fortifications protected the town from enemy attacks.
A more technical term for defensive ramparts or earthworks. Often used in historical or military contexts.
古代ローマの防塁が発掘された。
Ancient Roman fortifications were excavated.
Referring to the action of building defensive structures or making a place stronger against military assault.
The act of fortifying, turning a place into a fortress. Often used as a noun or with する.
その町は戦争に備えて要塞化された。
The town was fortified in preparation for war.
Defense preparations, including fortification. Can be used as a noun or with する.
A common phrase meaning 'to strengthen defenses', which implies fortifying a position.
敵の攻撃に備えて防御を固めた。
They fortified their defenses against the enemy attack.
Metaphorical use: making an argument, position, or system stronger or more secure.
General term for strengthening or reinforcement. Works for abstract things like arguments, systems, or positions.
彼はデータで自分の主張を強化した。
He fortified his argument with data.
To reinforce or shore up. Often used for arguments, evidence, or structures.
新しい証拠が彼の立場を補強した。
The new evidence fortified his position.
Referring to food or beverages that have had vitamins or minerals added.
Standard term for 'fortified food'. Often used in nutritional contexts.
このシリアルはビタミンで強化されている。
This cereal is fortified with vitamins.
Nutrient fortification. Used as a modifier or with する.
栄養強化されたミルクを飲んでいる。
I drink fortified milk.
Avoid directly translating 'fortification' as 要塞化 when referring to abstract strengthening. Use 強化 or 補強 instead. 要塞化 is only for physical military fortification.
We need to strengthen the fortifications along the border.