indistinct

adjective
UK /ˌɪndɪˈstɪŋkt/
US /ˌɪndɪˈstɪŋkt/

Something that is indistinct is hard to see or hear clearly.

The mountains were indistinct in the fog.


OTHER MEANINGS

2. Not clearly defined or easy to identify.

He had an indistinct memory of his childhood.

3. Not clearly pronounced or articulated in speech.

Her voice was indistinct over the phone.

4. Lacking sharp outlines or clear boundaries.

The indistinct shape moved slowly in the shadows.