first openly gay first opens first opera first operand first operating first operating mode first operating system first operation first operational first operations first operator first opinion first opponent first opportunity first opposable first opposition first optical first optical fiber first option first optional protocol first opus first or last first or last name first or only first or second first or second language first or second time first or the second first or third first orange first orbit first orbital first order first order of business first ordinary first organ first organic first organised first organization first organizational first organized first orientation first original first originated first orthodox first oscar first oscillator first ottoman first out first out of first outbreak first outcome first outdoor first outer first outer layer first outfit first outing first outlet first outline first output first outside first overall first overall pick first overnight first overseas first own first owner first owners first pacific first pack first package first packet first pad first page first page of google first pages first paid first paint first painted first painter first painting first paintings first pair first pair of shoes first pakistani first palace first palestinian first pan first panel first panic first papal first paper first papers first parachute first parade first paragraph first paragraph should first paragraphs first parallel