English Reference
verb

insist

v.
US /ˌɪnˈsɪst/ UK /ɪnsˈɪst/ in·sist UK spelling insisted, insists

  1. 01 B1 Intermediate

    to say something very firmly, especially when other people do not believe you.

    to assert a statement or claim emphatically, often in the face of doubt or contradiction.

    Simple

    He insisted that he had locked the door, even though it was open.

    In context

    Despite the overwhelming evidence presented by the prosecution, the defendant continued to insist that he had never visited the property.

    Usage

    Often followed by a 'that' clause or the preposition 'on'.

    Pitfall
    She insisted that she is right. She insisted that she was right.

    When 'insist' is in the past tense, the following verb usually moves back in time as well.

  2. 02 B2 Upper Intermediate

    to say that something must happen or that someone must do something.

    to demand a specific action or outcome persistently, refusing to accept a refusal.

    Simple

    My parents insist that I finish my homework before I go out.

    In context

    The manager insisted on a full written report by Monday morning, regardless of the team's current workload.

    Usage

    Commonly takes 'on' followed by a gerund, or a 'that' clause using the subjunctive mood in formal contexts.

    Pitfall
    I insist you to come. I insist that you come.

    Do not use 'insist' with an object and an infinitive. Use a 'that' clause instead.

He insisted the railway was safe, and that Network Rail took various measures to manage the impact of weather on tracks and other railway equipment.

BBC News· 19 Aug 2026

Muir has previously insisted that Daera had "no choice" but to cull the animals.

BBC News· 17 Aug 2026

Partly from Middle French insister, from Latin īnsistere; and partly from a back-formation from insistence. Compare typologically from the same PIE root Bulgarian настоявам (nastojavam), Russian наста́ивать (nastáivatʹ).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin īnsistō
Level B2 · Upper Intermediate
Frequency Common
Updated