English Reference
adjective

exhaustive

adj.
US /ɪɡˈzɔstɪv/ UK /ɛɡzˈɔːstɪv/ ex·haus·tive

  1. 01 C1 Advanced AcademicFormal

    including every possible detail or part so that nothing is left out.

    including every possible element; fully comprehensive and thorough in scope.

    Simple

    The police conducted an exhaustive search of the house but found nothing.

    In context

    After an exhaustive review of the scientific literature, the researchers concluded that no further trials were necessary at this stage.

    Usage

    Usually placed before a noun like 'search', 'list', 'report', or 'study'.

    Teacher's tip

    Learners often confuse this with 'exhausting'. Remind them that 'exhaustive' describes the completeness of a task, not the physical fatigue of the person doing it.

    Pitfall
    The long walk was very exhaustive. The long walk was very exhausting.

    Use 'exhaustive' for a thorough search or list; use 'exhausting' for something that makes you feel very tired.

  2. 02 C2 Proficiency Archaic

    making you feel very tired or using up all your energy.

    tending to exhaust; causing fatigue or depletion of resources.

    Simple

    The soldiers found the long march through the mud to be exhaustive.

    In context

    The exhaustive nature of the climb left the expedition members unable to continue without a full day of rest.

    Teacher's tip

    This sense is rare in modern English; 'exhausting' is the standard choice for this meaning today.

    tiringwearisomedraining

Exhaustive investigations in France and the UK have left police no closer to understanding who carried out the al-Hilli murders and why.

BBC News· 1 Sept 2026

Exhaustive research by government lawyers – detailed in more than 1,600 pages of filings – claim internal company documents included warnings about the products being toxic.

The Guardian· 17 Aug 2026

Borrowed from Medieval Latin exhaustīvus, also exhaust + -ive by surface analysis.

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

This entry
Origin la-med exhaustīvus
Level C1 · Advanced
Frequency Frequent
Updated