Antonyms for the term "close studies" may include broad surveys, superficial observations, or casual glances. While "close studies" entail a meticulous examination or analysis of a particular subject, antonyms suggest a more cursory or perfunctory approach to learning. Broad surveys may refer to a large-scale exploration of a certain field, while superficial observations relate to a surface-level analysis of a subject without going into detail. Casual glances, on the other hand, simply imply a brief or superficial inspection without much thought or effort. In contrast to close studies, antonyms propose a less comprehensive and detailed approach to understanding a subject.