瑕疵 (かし) means "defect, flaw, or imperfection," often used in formal or legal contexts. Both `瑕` (カ) and `疵` (シ) are standard On'yomi readings, forming a compound meaning "flaw." Common misreadings like `かち` incorrectly render `疵` as `チ`. `きず` and `あやまち` are kun'yomi for related concepts or individual kanji, not for the compound `瑕疵`.

瑕疵 (かし) は「欠点、欠陥、不備」を意味し、法律などで使われます。「瑕」（カ）も「疵」（シ）も標準的な音読みで、どちらも「傷」や「欠点」を表します。誤読の「かち」は「疵」の読み間違い、「きず」や「あやまち」は訓読みであり、この熟語の読みではありません。