posing no difficulty; requiring little effort; "an easy job"; "an easy problem"; "an easy victory"; "the house is easy to heat"; "satisfied with easy answers"; "took the easy way out of his dilemma"
19
apprehensible
capable of being apprehended or understood
13
obvious
easily perceived by the senses or grasped by the mind; "a perceptible sense of expectation in the court"; "an obvious (or palpable) lie"
2
discernible
capable of being seen or noticed; "a discernible change in attitude"; "a clearly evident erasure in the manuscript"; "an observable change in behavior"