Choose the word which is most opposite in meaning to the given word:
Subtle

Subtle ( Adjective)
English Meaning: (especially of a change or distinction) so delicate or precise as to be difficult to analyse or describe.
Example Sentence: his language expresses rich and subtle meanings.
Synonym: artful, beguiling, cagey (also cagy), crafty, cunning, cute, designing, devious.
Antonym: obvious, open, patent, plain, public, unconcealed.

Source: Merriam-webster Dictionary