indistinct
/ˌɪndɪˈstɪŋkt/
adjective
- Not clear or sharply defined; difficult to see, hear, or understand.
- Through the fog, the outline of the building was indistinct and ghostly.
- The photograph was blurry, making the faces in the background indistinct.
- He spoke in an indistinct mumble, so I couldn't catch his name.