- Arabic: غامِض (ḡāmiḍ), غَلِق (ḡaliq), مُبْهَم (mubham), مُسْتَغْلِق (mustaḡliq)
- Bulgarian: неразгадаем (bg) (nerazgadaem)
- Catalan: inescrutable (ca), insondable (ca)
- Chinese:
- Mandarin: 不可理解的 (bùkě lǐjiě de)
- Danish: uransagelig, uudgrundelig, gådefuld, ubegribelig, ufattelig, uforståelig
- Dutch: ondoorgrondelijk (nl)
- Esperanto: (please verify) kurioza
- Finnish: käsittämätön (fi)
- French: impénétrable (fr), incompréhensible (fr), insondable (fr)
- Galician: inescrutábel (gl) m or f
- German: undurchschaubar (de)
- Greek: ακατανόητος (el) (akatanóitos)
- Hindi: दुरधिगम (hi) (durdhigam), दुर्ज्ञेय (hi) (durjñey), दुर्बोध (hi) (durbodh), गूढ़ (hi) (gūṛh), दुरत्यय (hi) (duratyay)
- Italian: impenetrabile (it), incomprensibile (it), insondabile
- Latin: perplexus
- Manx: neuronsoilagh
- Norwegian:
- Bokmål: uutgrunnelig
- Portuguese: inescrutável (pt)
- Romanian: inscrutabil, neexaminabil, necercetabil, neanchetabil, de necercetat
- Russian: зага́дочный (ru) (zagádočnyj), непостижимый (ru) (nepostižimyj), необъяснимый (ru) (neobʺjasnimyj), непоня́тный (ru) (neponjátnyj), неисповеди́мый (ru) (neispovedímyj)
- Spanish: inescrutable (es), impenetrable, incomprensible (es), insondable (es), inscrutable (es)
- Swedish: outgrundlig (sv)
- Turkish: anlaşılmaz (tr), esrarlı (tr), gizemli (tr), esrârengiz
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