1. Not known by trial; not established as true.

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

• unprovoced,
• unprovoed,
• unnaproved,
• inprooved,
• uninproved,
• inproved,
• emproved,
• aoproved,
• opproved,
• unprovked,
• aaproved,
• aproved,
• inprove,
• inproves,
• inmproved,
• iproved,
• unarowed,
• uncraved,
• uncroped,
• unerodede

• unfretted,
• unbraced,
• unbridled,
• unfree,
• unpredicted,
• unbrace,
• unpriced,
• unbraid,
• unprompted,
• unprovable,
• unpromised,
• unbrushed,
• unprophetic,
• unframed,
• unprotected,
• unprovoked,
• unpressed,
• unbrowsed,
• unproven,
• unprocessed,
• unbranded,
• unprovoking,
• unfrosted.

The adjective form of "unproved" is "unproven".

The plural form of the word "unproved" is "unproveds". However, it is worth mentioning that "unproved" is not commonly used in its plural form. Instead, "unproven" is often preferred.

The singular form of the word "unproved" is "unproven"