1. Clothes next the skin.

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

• ynderclothing,
• hnderclothing,
• jnderclothing,
• inderclothing,
• 8nderclothing,
• 7nderclothing,
• ubderclothing,
• umderclothing,
• ujderclothing,
• uhderclothing,
• unserclothing,
• unxerclothing,
• undderclothing,
• underdclothing,
• unerclothing,
• undeclothing,
• underlothing,
• unterclothing,
• underclothings,
• undercloathing

• undercharge,
• underclothed,
• undergrowth,
• underclothes,
• underlying,
• under that,
• undertaking,
• underreckoning,
• underrating,
• underclassman,
• undershoot,
• underclass,
• underneath.

The adjective form of the word "underclothing" is "underclothed".

The plural of the "underclothing" can be the "underclothings".

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