The Esperanto words for orthodox and unorthodox are ortodoksa and heterodoksaj.
"unorthodox", when the meaning is non-conventional or non-traditionalist, but "heterodox", when the meaning is a non-Orthodox Christian or belief.
The opposite would be orthodox: conventional, traditional, standard, or usual.
The Esperanto words for far and away are malproskime and for.
The Esperanto words for astronaut and cosmonaut are very similar to the English words. In Esperanto you would use astronaŭto and kosmonaŭto.
The Esperanto words for boring and fun are enuiga and amuza.
The Esperanto words for salt and pepper are salo are pipro.
The Esperanto words for near and far are proksime and malproksime.
The Esperanto words for car and driver are aŭto and ŝoforo.
The Esperanto words for alive and dead are vivas and mortinto.
The Esperanto words for hungry and full are malsata and plena.
The Esperanto words for dark and bright are malhela and brila.
The Esperanto words for broken and fixed are rompita and fiksa.