entrenches

Entrenches is the third-person singular present form of the verb entrench, and it is in this conjugated shape that the word most often appears in modern prose. To say that something entrenches an idea or a privilege is to say that repetition has made it load-bearing. The -es ending follows the standard English conjugation for the present tense when the subject is singular and third person: she entrenches, the law entrenches, time entrenches. The underlying verb entrench dates to the 1590s.

Entrench was built in English from the prefix en-, which puts things into states or places, and the noun trench. Trench arrived in Middle English during the fourteenth century from Old French trenchier, a verb meaning to cut, and its Vulgar Latin ancestor is related to truncare, to cut short. Soldiers in the English civil wars of the seventeenth century knew entrench as a practical command: you dug around your position to protect it. The word moved from the battlefield to the argument by the eighteenth century.

The metaphorical leap from soil to idea happened because the mechanics are the same. Repeating a behavior cuts channels in social expectation the way a spade cuts channels in earth. When a procedure happens the same way a hundred times, it entrenches. When a privilege is exercised without challenge across a generation, it entrenches. Edmund Burke in 1790 wrote about the way long usage entrenches custom until custom feels like law.

What entrenches is worth examining. Power entrenches when it goes unquestioned. Bias entrenches when it is woven into systems rather than expressed by individuals. Language entrenches assumptions by building them into categories. The present-tense form focuses attention on the ongoing process, not the finished result.