This paper reports a case study on a family of American English constructions that will be called the family of approximate comparison constructions. This family has three members, all of which follow the syntactic pattern about as X as Y with X being an adjective, but which allow three related functions: literal comparison, simile and irony. Two cognitive frameworks concern themselves with irony, the cognitive modelling approach and viewpoint approach, and the paper will show that, while the ironic approximate comparison (...) construction calls central assumptions of the cognitive modelling approach to question, the viewpoint account can be refined to handle these cases. In doing so, it furthers our understanding of the cognitive underpinning of irony. The paper provides a corpus-based analysis on the Y slot as well as collostructional analyses on the adjectival X slot in the family of approximate comparison constructions. The results thereof suggest that the ironic approximate comparison construction, in comparison to its literal counterpart, prefers adjectives that convey positively connotated, nuanced attitudes and is formally less variable in the Y slot. The preference for particular adjectives lends further support to the assumption that hearers understand the construction as ironic or literal before speakers complete their utterance. Given that, it is argued that the ironic approximate comparison construction communicates an inherent viewpoint. (shrink)