seul

/sœl/
1.
adjectivemasculineSing

alone (without others)

by oneself

solitary

Je préfère rester seul ce soir.

I prefer to stay alone tonight.

Synonyms:tout seul, isolé, solitaire
2.
adjectivemasculineSing

only

sole

single

C'est le seul mec qui a compris le problème.

He's the only guy who understood the problem.

Synonyms:unique, seul et unique

Notes

GENERAL INFO

Seul is an adjective meaning "alone" or "only." It agrees in gender and number with the noun it modifies: seule (f.s.), seuls (m.pl.), seules (f.pl.).

USAGE

When meaning "alone," it often follows the verb or describes the subject: "Elle est seule." (She is alone.) When meaning "only," it usually precedes the noun: "C'est le seul restaurant ouvert." (It's the only open restaurant.)

TRAPS

Do not confuse seul with "solitaire." Seul describes the state of being by oneself. "Solitaire" describes a person who *likes* being alone or is habitually isolated.