• xither,
• vither,
• dither,
• cuther,
• cjther,
• ckther,
• c9ther,
• c8ther,
• cifher,
• cigher,
• ciyher,
• ci6her,
• cithre,
• cyther,
• cithar,
• cythera,
• seither,
• cithra,
• Cithera,
• cythar

• either,
• zither,
• slither,
• wither,
• cider,
• scythe,
• cite,
• cather.

The adjective form of the word "cither" is "cithern".

The plural of the "cither" can be the "cithers".

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