Alone vs Isolated vs Single vs Solitary

When to use each in English, with meaning, register, and examples.

Alone

Top 1,000 (very common)A2

Isolated

Top 2,000 (common)B2adjective

Single

Top 1,000 (very common)A2adjective

Solitary

Top 3,000 (common)C1adjective
 AloneIsolatedSingleSolitary
Pronunciation🇬🇧 /["/əˈləʊn/"]/🇺🇸 /["/əˈləʊn/"]/🇬🇧 /["/ˈaɪsəleɪtɪd/"]/🇺🇸 /["/ˈaɪsəleɪtɪd/"]/🇬🇧 /["/ˈsɪŋɡl/"]/🇺🇸 /["/ˈsɪŋɡl/"]/🇬🇧 //ˈsɒl.ɪ.tər.i//🇺🇸 //ˈsɑː.lɪ.tɛr.i//
Meaningby yourself; not with anyone elsealone and away from othersOne person or thing.Being alone or without companions.
ExampleI like to spend some time alone to think about my day.The village was isolated by the heavy snowfall, cutting off all roads.He prefers to live a single life without any commitments.He preferred a solitary life in the mountains.
RegisterNeutralNeutralNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)Top 1,000 (very common)Top 3,000 (common)
CEFR levelA2B2A2C1
Part of speechadjectiveadjectiveadjective
Collocationsbe, sit, stand, very much, all, completely, with, be, sit, stand, very much, all, completely, with, be, sit, stand, very much, all, completely, withappear, be, feel, extremely, fairly, very, from, appear, be, feel, extremely, fairly, very, fromsingle person, single item, single ticket, single life, single parentsolitary confinement, solitary journey, solitary lifestyle
Antonymstogether, accompanied, with othersconnected, integrated, includedmultiple, coupled, togethersocial, accompanied, gregarious
Common mistakes'alone' vs 'lonely', confused when feeling lonely, Using 'aloneness' as a noun incorrectly, Saying 'I am alone' when needing to report being safe; prefer 'I am okay.'Confused with 'isolated' vs 'isolation' in context., Using 'isolated' to describe only physical space, not emotional situations., Incorrectly applying it to describe crowds instead of individuals.Mixing up with 'singly' which has a different meaning., Using 'single' when referring to multiple items or people., Confusing 'single' with 'alone', which has a different connotation.Confusing with 'solo', which often implies a choice rather than loneliness., Using inappropriately to describe a group context., Overusing in social contexts where 'alone' is more appropriate.
Usage notesUse 'alone' when referring to a state of being by oneself. It can be used positively (enjoying solitude) or negatively (feeling lonely). Avoid using it in overly formal contexts where 'solitary' might be preferred.Use 'isolated' to describe someone or something that is separated from others. Suitable in both formal and informal contexts, but avoid when discussing social gatherings or closeness.Used to describe someone not in a relationship. In formal contexts, it can refer to a single item. Avoid using in very casual or slang conversations where 'solo' might be more suitable.Use 'solitary' to describe situations where someone or something is alone. It sounds formal; avoid it in casual conversations.

See it in real clips

Alone
Single

Frequently asked questions: Alone vs Isolated vs Single vs Solitary

What's the difference between Alone, Isolated, Single, and Solitary?

Alone: by yourself; not with anyone else Isolated: alone and away from others Single: One person or thing. Solitary: Being alone or without companions.

Which is more advanced: Alone, Isolated, Single, and Solitary?

Solitary is the highest level, at C1, on the CEFR scale.

Are Alone, Isolated, Single, and Solitary the same CEFR level?

Alone: A2, Isolated: B2, Single: A2, Solitary: C1 on the CEFR scale.

Can you show an example of each?

Alone: I like to spend some time alone to think about my day. Isolated: The village was isolated by the heavy snowfall, cutting off all roads. Single: He prefers to live a single life without any commitments. Solitary: He preferred a solitary life in the mountains.

Can I use Alone, Isolated, Single, and Solitary interchangeably?

Not always. Alone, Isolated, Single, and Solitary are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.