cohabitation
/koʊˌhæbɪˈteɪʃən/
CommonLiving together with a romantic partner without being married.
Can carry different weight depending on context. Used clinically in legal and housing discussions, but also used casually online when people want to sound more official about a relationship milestone.
Real-world examples4 examples
| # | Example | What it means | Source |
|---|---|---|---|
| 01 | two years of cohabitation and i still cannot figure out who is supposed to buy the dish soap | Even after a long time living together, small domestic logistics remain unresolved. | x, 2024 |
| 02 | honestly cohabitation before marriage is the best test. you find out everything. | Living together reveals compatibility issues more clearly than dating alone. | reddit, 2023 |
| 03 | typed 'cohabitation agreement' into google at midnight and i think i've entered a new chapter of my life | Looking up legal protections for shared living marks a serious relationship milestone. | x, 2024 |
| 04 | cohabitation is going well except he thinks the thermostat is a suggestion | One partner refuses to respect the agreed temperature setting. | tiktok, 2023 |
Use it when
- Describing the ongoing arrangement of living with a partner.
- Discussing the pros and cons of living together before marriage.
- Asking about legal or financial rights of unmarried partners sharing a home.
Do not use it when
- You just mean two roommates who are not romantically involved.Use “living together” instead.
- You are describing the act of moving in.Use “moving in together” instead.
Variations and related forms
Cohabitation vs moving in together
cohabitation
Cohabitation is the formal term for the ongoing state of sharing a home with a partner.
VS
moving-in-together
Moving in together is casual and refers to the transition or event.
Origin and context
From Latin 'cohabitare', meaning to live together. In modern usage it refers specifically to unmarried romantic partners sharing a home.
- First seen
- pre-2000s
- Confidence
- high
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Use this stable URL to reference the entry.
https://slang.fyi/cohabitationUpdated: 2026-08-29License: CC BY 4.0