deber - to owe; must, should, ought to
decidir - to decide, settle, resolve
decidirse - to decide, make up one's mind
decir - to say, tell
declarar - to declare, state; to bid [in cards]
decorar - to decorate, adorn
dedicar - to dedicate
dedicarse - to devote oneself, dedicate oneself, go in for, take up [carrer/interest in something]
defender - to defend