• passerbys,
• passerby,
• paseerby,
• passeeby,
• passeerby,
• passeby,
• passerb,
• oasser by,
• lasser by,
• -asser by,
• 0asser by,
• pzsser by,
• pssser by,
• pwsser by,
• pqsser by,
• paaser by,
• pazser by,
• paxser by,
• padser by,
• paeser by

The adjective form of the word "passerby" is "passing".

The plural form of the word "passer by" is "passersby"

The singular form of the word "passer by" is "passerby"