Antonyms for the word "touches upon" may include words like "ignore," "neglect," "avoid," "sidestep," or "omit." When we say that something "touches upon" a topic, we mean that it briefly refers to it, without exploring it fully. So, antonyms for "touches upon" would be words that indicate a complete lack of attention or interest towards a subject. Instead of "touching upon" a topic, we may "avoid" it, or "neglect" it, either deliberately or unintentionally. Alternatively, we may "sidestep" or "omit" the topic from the discussion altogether, focusing on other aspects of the subject instead.