General Antonyms:
* Conceal
* Hide
* Mask
* Disguise
* Obscure
* Misidentify
* Misinterpret
* Confuse
Specific Antonyms (depending on context):
* Ignore (if identifying means to acknowledge or notice)
* Neglect (if identifying means to pay attention to)
* Deny (if identifying means to acknowledge something is true)
* Mislabel (if identifying means to categorize correctly)
* Disregard (if identifying means to take into consideration)
The best antonym for "identify" will depend on the specific context of the sentence.