1. Containing or proceeding from previous caution; adapted to prevent mischief or secure good.

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

• recationary,
• precausionary,
• precutionary,
• procationary,
• precuationary,
• percautionary,
• precautionay,
• procautionary,
• precationary,
• precautionery,
• precautinary,
• precautionsry,
• preecautionary,
• precautiionary,
• precautonary,
• preacutionary,
• preccautionary,
• precautionaryy,
• pracautionary,
• Prenotionary

• practitioner,
• precautional,
• practician,
• precaution.

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

The plural form of the word "precautionary" is "precautionaries".

The singular form of the word "precautionary" is "precaution"