1. That may be referred.

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

• referrable,
• rehirable,
• preferible,
• prefferable,
• refilable,
• peferably,
• reprable,
• reversable,
• revesable,
• referal,
• preverable,
• referall,
• perferable,
• referaal,
• prefereble,
• vererable,
• prefereable,
• deferable,
• preferablie,
• proferable

• repairable,
• reparable.

The adjective form of "referable" is "referrable".

The plural form of the word "referable" is "referables".

The singular form of the word "referable" is "referable". It is a word that does not change in form between singular and plural usage.