BED - A piece of furniture, usually flat and soft, to sleep on.
BET - A wager, an agreement between two parties that a stake (usually money) will be paid by the loser to the winner (the winner being the one who correctly forecast the outcome of an event).
BUD - A newly formed leaf or flower that has not yet unfolded.
BUT - Outside of.
DUD - A device or machine that is useless because it does not work properly or has failed to work, such as a bomb, or explosive projectile.
TUB - A flat-bottomed vessel, of width similar to or greater than its height, used for storing or packing things, or for washing things in.
DUB - To confer knighthood; the conclusion of the ceremony was marked by a tap on the shoulder with the sword.
DEBT - An action, state of mind, or object one has an obligation to perform for another, adopt toward another, or give to another.
DEED - An action or act; something that is done.
DUDE - A man.
TUBE - Anything that is hollow and cylindrical in shape.
BEET - Beta vulgaris, a plant with a swollen root which is eaten or used to make sugar.
DUET - A musical composition in two parts, each performed by a single voice (singer, instrument or univoce ensemble).
DEBUT - A performer's first-time performance to the public.
TUBED - Possessing a tube or tubes.
DEBUTED - Simple past tense and past participle of debut.