1. Soil beneath the surface; subsoil.

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

• underseal,
• yndersoil,
• hndersoil,
• jndersoil,
• indersoil,
• 8ndersoil,
• 7ndersoil,
• ubdersoil,
• umdersoil,
• ujdersoil,
• uhdersoil,
• unsersoil,
• unxersoil,
• uncersoil,
• unfersoil,
• unrersoil,
• uneersoil,
• undesoil,
• undersoill,
• undersaile

• undergird,
• undersell,
• undersexed,
• underdrawers,
• underside,
• underbid,
• understated,
• underplay,
• Underdahl,
• underline,
• underslung,
• underling,
• underlay,
• underseal,
• underfoot,
• understood,
• undervalue,
• undermine,
• underwater,
• underwood,
• undershirt,
• understudy,
• underfelt,
• unaddressed,
• undersealed,
• underpin,
• underwriter,
• underived,
• understand,
• underclass,
• undersign,
• undersize,
• undersea,
• underwing,
• underweight,
• underbelly,
• undertide,
• undergo,
• undersized,
• under it,
• under wraps,
• underfur,
• undergrow,
• underskirt,
• underwear,
• underworld,
• underspend,
• understock,
• underdress,
• underpass,
• undertaker,
• underpart,
• underquote,
• underlie,
• underpants,
• undershot,
• underboss,
• untier,
• underseller,
• under fire,
• undercover,
• undergrowth,
• underhill,
• undershoot,
• understate,
• underground,
• undoer,
• underprice,
• underscore,
• underlying,
• underwrite,
• underspent,
• under arms,
• undershrub,
• underperform.

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

The plural of the "undersoil" can be the "undersoils".

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