The phrase "had a look see" generally implies that someone is taking a quick glance or assessing a situation. The antonyms for this could be "ignored," "neglected," or "overlooked," which indicate a lack of attention or interest. On the other hand, "scrutinized," "inspected," or "analyzed" would be considered antonyms that suggest thorough examination, paying close attention to details. Another antonym could be "glanced away," indicating a lack of interest or unwillingness to look at something. Overall, the antonyms for "had a look see" reflect different degrees of attention and interest towards a given object or situation.