nebulous

adjectives

lacking definite form or limits
"gropes among cloudy issues toward a feeble conclusion"- H.T.Moore; "nebulous distinction between pride and conceit"
cloudy, nebulose, nebulous
of or relating to or resembling a nebula
"the nebular hypothesis of the origin of the solar system"
nebular, nebulous
is derived from
nebula
pertains to
nebula
lacking definition or definite content
"nebulous reasons"; "unfixed as were her general notions of what men ought to be"- Jane Austen
nebulous, unfixed