• die-hared,
• die-hard,
• die-hart,
• siehard,
• xiehard,
• ciehard,
• fiehard,
• riehard,
• eiehard,
• duehard,
• djehard,
• dkehard,
• doehard,
• diehared,
• deihard,
• diehart,
• Desard,
• Kainard,
• diepered,
• pailard

• dread,
• hoard,
• Dieted,
• depart,
• heard,
• hardy,
• Dieter,
• hard,
• head,
• Died,
• dehart,
• die hard,
• dead,
• herd,
• dished,
• heart,
• die-hard.

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

The plural of the "diehard" can be the "diehards".

The singular of the "diehard" can be the "diehard".