expression, i-adjective
vague; elusive; hard to pin down
Describes a person, statement, or thing that is difficult to grasp, understand, or define clearly. Often used for someone's character or an abstract concept that feels slippery or ambiguous.
See also: つかみ所
彼はつかみ所のない人で、何を考えているのかわからない。
He is an elusive person; I can't tell what he's thinking.
The explanation was too vague to understand.