• herball,
• hardally,
• bordcall,
• bierdcall,
• hareball,
• harball,
• hardbakd,
• gardball,
• bardball,
• nardball,
• jardball,
• uardball,
• yardball,
• hzrdball,
• hsrdball,
• hwrdball,
• hqrdball,
• haedball,
• haddball,
• hatdball

• hardpan,
• hardbacked,
• hardbake,
• hard-boiled,
• hard palate,
• handball,
• hardback.

The adjective form of the word "hardball" is "hardball". In English, this term can function as both a noun and an adjective.

The plural of the "hardball" can be the "hardballs".

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