出典:Wiktionary
From Middle English bikeren (“to attack”), from Middle Dutch bicken (“to stab, thrust, attack”) + -er (frequentative suffix), from Proto-Germanic *bikjaną (compare 古期英語 becca (“pickax”), Dutch bikken (“to hack”), German picken (“to peck, pick at”), Old Norse bikkja (“to plunge into water”)), from Proto-Indo-European *bʰeg- (“to smash, break”). Compare also German Low German bickern (“to nibble, gnaw”).
bicker (三人称単数 現在形 bickers, 現在分詞 bickering, 過去形および過去分詞形 bickered)