ADD - To join or unite, as one thing to another, or as several particulars, so as to increase the number, augment the quantity, or enlarge the magnitude, or so as to form into one aggregate. Hence: To sum up; to put together mentally.
DAD - A father, a male parent.
HAD - Simple past tense and past participle of have.
OAK - A tree of the genus Quercus.
ODD - Single; sole; singular; not having a mate.
CAD - A person who stands at the door of an omnibus to open and shut it, and to receive fares; an idle hanger-on about innyards.
ADO - To do; in doing; as, there is nothing ado.
DOCK - Any of the genus Rumex of coarse weedy plants with small green flowers related to buckwheat, especially the common dock, and used as potherbs and in folk medicine, especially in curing nettle rash.
HACK - To hack into; to gain unauthorized access to (a computer system, e.g., a website, or network) by manipulating code; to crack.
CODA - A passage which brings a movement or piece to a conclusion through prolongation.
HOCK - A Rhenish wine, of a light yellow color, either sparkling or still, from the Hochheim region, but often applied to all Rhenish wines.
CHAD - Small pieces of paper punched out from the edges of continuous stationery, punched cards, paper tape etc.
HADDOCK - A marine fish, Melanogrammus aeglefinus, of the North Atlantic, important as a food fish.