• unforgoibile,
• unforgoabal,
• unforgoabel,
• unforgobale,
• unforogable,
• unforgauble,
• unforgoable,
• unforgoabe,
• unforgoabale,
• unforgoabele

• unforgettable,
• unforgivable,
• unforeseeable,
• ungovernable,
• unforgiving,
• Unforgiven,
• unforged,
• Unforeknown.

The adjective form of the word "unforgoable" is "unforgivable".

The plural form of the word "unforgoable" is "unforgoables".

The singular form of the word "unforgoable" is "unforgoable". This word does not have a distinct singular form, as it is already in its base form.