Previous studies examine near-synonyms with reference to interlanguage errors or researchers' subjective selection, which brings out analysis in detailed but time-consuming. The verb gaoxing is widely discussed. However, researchers have different opinions on its synonyms. This paper utilizes corpus tools to find out the near-synonyms of gaoxing and probes into them via CQP web. According to their part-of-speeches and argument structures, 20 near-synonyms relevant to gaoxing are classified into four types: First, a stative verb with a sentential object; second, a stative verb with a verbal object; third, a stative causative verb; fourth, a stative intransitive verb. The first one is further grouped by the verb behaviors of being a complement or not, with or without realis and volition values and of being followed by qilai or not. Among them, the features of gaoxing are most distinctive from other verbs. Further, based on collostructions, the fourth one is divided into two subtypes: The former can occur in an optative sentence but the latter cannot. In the former subtype, xiyue behaves most differently from others whereas kaixin and kuaile behave most similarly. In the latter subtype, xihuan behaves most differently from others whereas jingxi and xinyue behave most similarly. In this study, context factors are included in the discrimination of Chinese near-synonyms. From a viewpoint of semantics and syntax, the analyses of near-synonyms in this paper are objective, and can be applied to teaching as well as textbook and reference book compilation.