• coucle,
• cucal,
• xoucal,
• voucal,
• foucal,
• doucal,
• ciucal,
• ckucal,
• clucal,
• cpucal,
• c0ucal,
• c9ucal,
• coycal,
• cohcal,
• cojcal,
• co8cal,
• co7cal,
• coocal,
• coocel,
• couclle

• coaxial,
• coccal,
• coequal,
• cochlea,
• cockle,
• coquille,
• cochell,
• coaxal.

The adjective form of the word "coucal" is "coucaline".

The plural of the "coucal" can be the "coucals".

The singular of the "coucal" can be the "coucal".