unobtrusive - Dictionary definition and meaning for word unobtrusive
something obtruding/protruding will be noticeable, UN(not)OBSTRUSIVE( undesirably noticeable) is unnoticeable and not blatant
Unobtrusive and Attractive are opposite words. While unobtrusive means, not making oneself or itself noticed, attractive refers to something that pulls your attention towards itself.
unobtrusive - un obstruct attention or not attracting attention.