noticeable -- (capable or worthy of being perceived; "noticeable shadows under her eyes"; "noticeable for its vivid historical background"; "a noticeable lack of friendliness")
detectable, noticeable -- (capable of being detected; "after a noticeable pause the lecturer continued")
obtrusive, noticeable -- (undesirably noticeable; "the obtrusive behavior of a spoiled child"; "equally obtrusive was the graffiti")
noticeable -- (readily noticed; "a noticeable resemblance")