1. That which grows under trees; shrubs or small trees growing among large ones.

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

• undergrownd,
• undergroth,
• undergrowe,
• undrgrow,
• undregrow,
• undergroww,
• yndergrowth,
• hndergrowth,
• jndergrowth,
• indergrowth,
• undergroweth,
• unergrowth,
• undrgrowth,
• undergrwth,
• undergorwth,
• undergrwoth,
• undargrowth,
• undergrouth,
• affergrowth,
• undegrown

• underact,
• underfur,
• underdone,
• undercharge,
• underdog,
• underfoot,
• undercurrent,
• underling,
• underpart,
• undergird,
• undersign,
• undergrad,
• under it,
• undercut,
• underclothing,
• underbody,
• undergarment,
• undershot,
• underquote,
• underboss,
• underneath,
• underwear,
• undergraduate,
• undershoot,
• underground,
• undergrow,
• underwood,
• underclothed,
• underwing,
• underdown,
• underclothes,
• undertow,
• undercoated,
• undertone,
• underperform,
• under control,
• underhung,
• undersoil,
• undercoat.

The adjective form of the word "undergrowth" is "undergrown".

The plural of the "undergrowth" can be the "undergrowths".

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