Adjectives

(a)backwarddirected or facing toward the back or rear“a backward view”
(a)backward(used of temperament or behavior) marked by a retiring nature“a backward lover”
(s)backward, half-witted, slow-witted, feeblemindedretarded in intellectual development
(s)backwardhaving made less than normal progress“an economically backward country”

Adverbs

(r)back, backward, backwards, rearward, rearwardsat or to or toward the back or rear“he moved back”, “tripped when he stepped backward”, “she looked rearward out the window of the car”
(r)backward, backwardsin a manner or order or direction the reverse of normal“it's easy to get the ‘i’ and the ‘e’ backward in words like ‘seize’ and ‘siege’”, “the child put her jersey on backward”
(r)back, backwardin or to or toward a past time“set the clocks back an hour”, “never look back”, “lovers of the past looking fondly backward”