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slang.fyi

ethical non-monogamy

/ˈɛθɪkəl nɒn məˈnɒɡəmi/

Common

Having multiple romantic or sexual partners with the full knowledge and consent of everyone involved.

It's an umbrella term. Polyamory, open relationships, swinging, and relationship anarchy all fall under it. Not everyone who practices ENM uses this label.

Real-world examples4 examples
#ExampleWhat it meansSource
01put ENM on my dating profile and suddenly people are actually asking real questions on the first dateDisclosing a non-monogamous lifestyle upfront filters out incompatible matches and opens better conversations.tiktok, 2023
02ENM isn't for everyone but it's not a phase for me. this is just how i do relationships.Asserting that ethical non-monogamy is a durable relationship orientation, not a temporary experiment.reddit, 2022
03the difference between ENM and cheating is two letters: O and K. one person said okay.Consent is the only thing that distinguishes ethical non-monogamy from infidelity.x, 2023
04my therapist had never heard the term ENM before our first session. took some explaining.Finding a therapist familiar with ethical non-monogamy can require educating them first.reddit, 2024

Use it when

  • Describing any consensual multi-partner relationship structure.
  • When you want to use an umbrella term without specifying whether you're poly, open, or in another structure.
  • Distinguishing consensual non-monogamy from cheating.

Do not use it when

  • You mean specifically polyamory, which is romantic rather than just sexual.Use “polyamory” instead.
  • You mean a specific structure like open relationship or swinging.

Variations and related forms

ENM

Common abbreviation for ethical non-monogamy.

CNM

Consensual non-monogamy. Used interchangeably with ENM, slightly more common in academic contexts.

Ethical non-monogamy vs polyamory

ethical non-monogamy

Ethical non-monogamy is the broad umbrella: any consensual multi-partner structure.

VS

polyamory

Polyamory specifically means multiple romantic relationships, not just sexual ones.

Origin and context

Emerged as a community term in the 1990s and 2000s to distinguish consensual multi-partner relationships from infidelity. 'Ethical' was added deliberately to emphasize that consent is the defining feature. Academic and popular adoption grew noticeably in the 2010s.

First seen
late-1990s
Confidence
medium

Cite this page

Use this stable URL to reference the entry.

https://slang.fyi/ethical-non-monogamy
Updated: 2026-08-28License: CC BY 4.0

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