# abstruser

CEFR C2 · Adjective

Source: https://englishreference.com/word/abstruser
Updated: 2026-05-18

## Definition

more difficult to understand or more strange than something else. It is an old-fashioned word that people rarely use today.

For teachers: more difficult to comprehend or more obscure in meaning.

## Examples

- The second chapter was more abstruse than the first.
- The philosopher's later works became increasingly abstruse, making them difficult for even his most dedicated students to follow.
- While the initial theory was clear and logical, the subsequent mathematical proofs were so abstruse that they required years of specialized study to fully grasp.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.