My Substack platform is focused on defining and illustrating vocabulary words that have been REAL answers for SAT vocabulary in context questions. But I have made an exception for IDIOSYNCRATIC. It has become a favorite High-Frequency WRONG answer. I have warned my SAT students and Substack subscribers by placing IDIOSYNCRATIC at the top of my list of WRONG answers!!
Numerous Reddit posts indicate that IDIOSYNCRATIC appeared as a possible answer in TWO September 2026 SATs. So, was IDIOSYNCRATIC a correct answer on either of these two questions? The answer is a definitive NO! Let’s take a look:
One question dealt with nineteenth century English writers who either published their works anonymously or used a pseudonym. Although this seems IDIOSYNCRATIC or peculiar to these individual writers, it was actually a “common practice” at the time. This phrase supported CONVENTION as the correct answer.
A second question dealt with the historic tendency of industries to AGGLOMERATE or concentrate in a specific area. For example, the early textile industry clustered in Manchester, England. Although it may seem superficially IDIOSYNCRATIC, this tendency to amass in one location is actually PARADIGMATIC or a typical model for many industries. For example, in America the early automobile industry concentrated in Detroit, Michigan.
IDIOSYNCRATIC – a characteristic that is unique or peculiar to an individual or group
CONVENTION – a commonly accepted practice
AGGLOMERATE – to gather or concentrate in a specific place; amass
PARADIGMATIC – a typical model or example