The opposite of subtle could be obvious.
Depending on the context, it could also be overt, harsh, forthright, or coarse.
subtle
It COULD be keeping quiet, silent, not speaking. :D
The opposite could be indistinct, unclear, fuzzy, blurry, or obscured.
a choice of words as usual, could be lamentable, wretched, dreadfull or diabolical
The comedian's jokes weren't vulgar; they relied upon sharpness and wit.
Yes, subtle is a word meaning elusive.
The opposite of subtle is obvious.
obvious
Subtle or understated.
meek mild understated subtle
It COULD be keeping quiet, silent, not speaking. :D
The opposite could be indistinct, unclear, fuzzy, blurry, or obscured.
a choice of words as usual, could be lamentable, wretched, dreadfull or diabolical
subtle means the opposite of obvious
The comedian's jokes weren't vulgar; they relied upon sharpness and wit.
The comparative form of "subtle" is "subtler" and the superlative form is "subtlest."
subtle
Her perfume was so subtle that he could only catch a hint of it when she passed by.