1. Having no date.

2. Waved; rising and falling in waves.

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

• undate,
• unwated,
• updatede,
• uptated,
• inadated,
• unioted,
• updaited,
• indiated,
• unfited,
• uppdated,
• uninted,
• unieted,
• updted,
• undeated,
• engated,
• adated,
• updeted,
• undeafted,
• underated,
• enidated

• undyed,
• unwedded,
• undetected,
• united,
• unnoted,
• unheeded,
• unitedly,
• unedited,
• unaided,
• Untiedt,
• untethered,
• unmated,
• undatable,
• unneeded,
• undeterred,
• unheated,
• untied.

The adjective form of the word "undated" is "undatable".

The plural form of "undated" is "undateds".

The singular form of the word "undated" is "undated".