undetectable

Describes something that cannot be discovered or noticed.

ruОписывает то, что невозможно обнаружить или заметить.esQue no puede ser detectado, descubierto o percibido; imposible de notar o identificar.frQui ne peut pas être détecté ou remarqué, que ce soit physiquement, techniquement ou de façon imperceptible.deBeschreibt etwas, das nicht entdeckt oder bemerkt werden kann.ptDescreve algo que não pode ser detectado, percebido ou notado.zh形容无法被察觉、发现或探测到的。arيصف شيئًا لا يمكن اكتشافه أو ملاحظته أو العثور عليه، إما لخفائه الشديد أو لعدم إمكانية إدراكه بالحواس أو بالأجهزة.

1. Not easily seen B2 formal

   Difficult or impossible to notice with the eyes.

   • The stain on the carpet was nearly undetectable.
   • The camouflage made the soldier undetectable in the forest.
   • The tiny crack in the vase was undetectable from a distance.

   ruНезаметныйesQue no se puede ver o percibir fácilmentefrIndétectable (à l'œil)deUnauffälligptImperceptívelzh难以察觉的arغير مرئي

   Synonyme: concealedhiddenimperceptibleindiscernibleinvisibleobscureunnoticeable

   Antonyme: apparentconspicuousnoticeableobviousvisible

2. Barely able to be perceived B2 formal

   So subtle or faint that it is almost impossible to sense or notice.

   • The change in temperature was undetectable to the human touch.
   • His nervousness was undetectable in his calm voice.
   • The difference between the two colors is undetectable to the naked eye.

   ruНеуловимыйesindetectable (casi imperceptible)frImperceptibledeKaum wahrnehmbarptImperceptívelzh难以察觉的arغير محسوس

   Synonyme: faintimperceptibleindistinctobscureslightsubtleunnoticeable

   Antonyme: apparentcleardistinctevidentnoticeableobviousperceptibletangible

• more undetectable comparative form
• most undetectable superlative form