noun
only half understood; partial understanding
Describes a state where something is not fully grasped; often used in the phrase 一知半解 (いっちはんかい, 'superficial knowledge').
彼の説明は半解のまま終わった。
His explanation ended with only a partial understanding.
一知半解の知識で判断するのは危険だ。
It is dangerous to judge based on superficial knowledge.