Irregular
Irregular adjective - Departing from some accepted standard of what is normal.
Questionable and irregular are semantically related In some cases you can use "Questionable" instead an adjective "Irregular".
Nearby Words: irregularity, irregularly
Questionable
Questionable adjective - Giving good reason for being doubted, questioned, or challenged.
Irregular and questionable are semantically related in suspicious topic. Sometimes you can use "Irregular" instead an adjective "Questionable".
Both words in one sentence
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Why We Can't Have Nice Things: Has an irregular show called this, and in a sense it fits the description of the trope: The show focuses on good and memorable games that didn't sell all that well because of either bad rep by review sites or questionable decisions by the developer.
Source: Creator / The Cynical Brit -
Samantha from Questionable Content has a rather irregular bathing schedule (and, apparently, a somewhat pungent stench as a result).
Source: Hates Baths - The Irregular at Magic High School, due to its nonsensical setting and plot, shallow characters, questionable content, massive political incorrectness, and brother sister incest.
Source: Snark Bait
Cite this Source
Questionable and Irregular. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/irregular/questionable
Irregular & Questionable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/irregular/questionable>.
Questionable or Irregular. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/irregular/questionable.
Google Ngram Viewer shows how "irregular" and "questionable" have occurred on timeline