जो स्पष्ट न हो।

बालक अस्पष्ट भाषा में कुछ कह रहा है।
अप्रतीत, अव्यक्त, अस्पष्ट, अस्फुट

Lacking clarity or distinctness.

A dim figure in the distance.
Only a faint recollection.
Shadowy figures in the gloom.
Saw a vague outline of a building through the fog.
A few wispy memories of childhood.
dim, faint, shadowy, vague, wispy