The phrase "delves into" means to explore deeply or thoroughly. Antonyms for this phrase would, therefore, be words or phrases that describe a lack of exploration or depth, such as superficiality, skimming, or grazing. When someone is superficial, they are not going beyond the surface of a topic or issue. Skimming implies a quick look, without examining details or nuances, while grazing suggests only a passing or cursory glance. Other antonyms might include overlooking, sidestepping, or ignoring, all of which imply a deliberate choice not to explore a topic in depth.