• undersands,
• undertands,
• underpant,
• undrepants,
• ynderpants,
• hnderpants,
• jnderpants,
• inderpants,
• 8nderpants,
• ubderpants,
• uinderpants,
• unerpants,
• undepants,
• underpans,
• underpanst,
• underpents,
• undermastsd,
• underplante,
• underlant,
• Underphant

• understand,
• underfelt,
• undertone,
• underneath,
• undersell,
• underpart,
• underwear,
• underdone,
• undercurrent,
• understate,
• undernourish,
• underivative,
• underexposure,
• underhand,
• underclassman,
• undersoil,
• undershrub,
• underpass,
• underline,
• under arms,
• under control,
• underclass,
• underact,
• underside,
• underpayment,
• underwing,
• undersurface,
• underfoot,
• undershot,
• underdown,
• undergird,
• under it,
• underpay,
• undercut,
• underseal,
• undermine,
• undersize,
• underprice,
• underworld,
• underspent,
• under wraps,
• underdrawers,
• undersea,
• under way,
• underboss,
• underexpose,
• undercoat,
• underling,
• underhung,
• underframe,
• underfur,
• undersign,
• undercoated,
• undergarment,
• undergrad,
• underplay,
• understated,
• underpin.

The adjective form of the word "underpants" is "underpant".

The plural of the "underpants" can be the "underpants".

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

The singular of the "underpants" can be the "under-pant".

The singular of the "underpants" can be the "under pant".