• nonsinonymous,
• nonsynonimous,
• nonsynonamous,
• nonsinonimous,
• nonsynomous,
• nonsinonamous,
• nonsynonimouse,
• nonsinonomous,
• nonsynfymous

• synonymous,
• Nonsympathetic,
• nonhomologous,
• nonsynchronous,
• nonsystematic,
• Nonanalog,
• Nonanalogous,
• nonhomogeneous,
• Nonparonymous,
• Nonasymptotic.

The adjective form of the word "nonsynonymous" is "nonsynonymous".

The plural form of the word "nonsynonymous" is "nonsynonymouses." However, it is worth noting that this word is not commonly used in the plural form.

The singular form of the word "nonsynonymous" is "nonsynonymous". This word does not change form when used in either singular or plural context.