discern

1. (not used in the progressive tenses)
   
   to know, recognize or understand sth, especially sth that is not obvious
   SYNONYM detect
   • It is possible to discern a number of different techniques in her work.
   • He discerned a certain coldness in their welcome.
   • It is often difficult to discern how widespread public support is.
2. to see or hear sth, but not very clearly
   SYNONYM make out
   • We could just discern the house in the distance.
   • She could clearly discern a figure walking up towards the house.
   • > discernible adjective:
     There is often no discernible difference between rival brands.
   • His face was barely discernible in the gloom.