English Reference
verb

adhere

v.
US /ədˈhɪɹ/ UK /ɐdhˈiə/ ad·here UK spelling adhered, adheres, adhering

  1. 01 C1 Advanced FormalTechnical

    to stick firmly to something.

    to stick fast to a surface or substance through physical attraction, suction, or glue. Intransitive; almost always used with the preposition 'to'.

    Simple

    The bandage will not adhere to your skin if it is wet.

    In context

    The specialized industrial coating is designed to adhere to metallic surfaces even under extreme thermal stress.

    Usage

    Usually takes the preposition 'to'.

  2. 02 C1 Advanced FormalAcademic

    to continue to obey a rule or maintain a belief.

    to behave according to a particular rule, belief, or agreement. Intransitive; requires 'to' before the object.

    Simple

    All staff members must adhere to the company's safety policy.

    In context

    The research team failed to strictly adhere to the established ethical guidelines, leading to the eventual dismissal of their findings.

    Usage

    Always used with the preposition 'to' followed by a noun phrase.

    Teacher's tip

    This is a high-frequency word in academic and legal contexts; students should use it instead of 'follow' to sound more professional.

Usage adhere to guidelines · adhere to · strictly adhere

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Phys.org· 15 Aug 2026

From Middle English *adheren (suggested by Middle English adherande (“adhering, adherent”, present participle)), from Latin adhaerēre, adhaesum: ad (“to”) + haerēre (“to stick”). Compare French adhérer.

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

This entry
Origin Latin adhaereō
Level C1 · Advanced
Frequency Frequent
Updated