棄却 (ききゃく) means "rejection or dismissal," often in legal or administrative contexts. Both `棄` (キ) and `却` (キャク) are standard On'yomi readings. `棄` means to abandon or discard, and `却` means to refuse or reject. The compound denotes formally dismissing a claim or appeal. Misreadings such as `きぎゃく` misinterpret `却` as `ギャク`, while `きや` and `ききゃ` are phonetic errors or incomplete readings.

棄却 (ききゃく) は「申し立てや訴えを退けること」を意味する法律用語です。「棄」（キ）と「却」（キャク）は標準的な音読みです。誤読の「きぎゃく」は「却」の読み間違いで、「きや」や「ききゃ」は音の誤りや省略です。