1. Slightly blue.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• buish,
• clush,
• bigish,
• babish,
• blosh,
• blufish,
• flouish,
• ablish,
• beush,
• blurh,
• blushe,
• bliush,
• blusih,
• bulish,
• bluch,
• bleash,
• bluid,
• blueh,
• bemish,
• abloish

• blueish,
• Blais,
• Blausey,
• bliss,
• bloch,
• blouse,
• bligh,
• blash,
• Blaise,
• bleich,
• blahs,
• blass,
• blick,
• BLAS,
• blighia,
• blasi,
• blish,
• Blaize,
• BLOSS,
• bless,
• Blough,
• blues,
• blush.

The adjective form of the word "bluish" is "blueish".

The plural form of the word "bluish" is "bluish". The word does not change when it is pluralized since it is an adjective and not a noun.

The singular form of the word "bluish" is "blue"