We don't have synonyms for obcure yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are obscure, obdure and objure.
"I realized that the purpose of writing is to inflate weak ideas, obscure poor reasoning, and inhibit clarity." Bill Watterson, Homicidal Psycho Jungle Cat page 62
"I realized that the purpose of writing is to inflate weak ideas, obscure poor reasoning, and inhibit clarity." Bill Watterson, Homicidal Psycho Jungle Cat page 62