| Language | Verb(s) | Language | Verb(s) |
|---|---|---|---|
| Catalan | reforçar | Danish | forstærke |
| Dutch | versterken,verstevigen | English | strengthen |
| Esperanto | fortigi, plifortigi | Estonian | tugevnema |
| Finnish | lujentaa, lujittaa, vahventaa, vahvistaa, vahvistua, vankentaa, voimistaa | French | conforter, raffermir |
| German | festigen, kräftigen, stärken | Greek | ενισχύω, εντυπωσιάζω, εξαπλώνω, εξαρχαΐζω |
| Hungarian | erősít, megerősödik | Icelandic | efla, styrkja, treysta |
| Indonesian | mempererat, memperkokoh, memperkuat, memperkukuh | Italian | assodare, corroborare, ingagliardire, potenziare, rinforzare, rinsaldare |
| Japanese | 強める, 強化 | Latvian | stiprināt |
| Lithuanian | stiprinti, sustiprinti, sutvirtinti | Macedonian | засили |
| Polish | umacniać, umocnić, wzmacniać, wzmocnić, zacieśniać, zacieśnić | Portuguese | fortalecer |
| Romanian | întări | Russian | укрепить, укреплять, усиливать, усилить |
| Spanish | consolidarse, fortalecerse, robustecer | Swedish | styrka, styrketräna, stärka, stäva |
| Turkish | güçlendirilmek, güçlendirmek, kuvvetlendirmek |