plus tôt vs plutôt
Summary
plus tôt (two words) is the comparative of tôt ("early"), meaning "earlier" — the opposite of plus tard ("later"). plutôt (one word) means "rather," "instead," or "quite," expressing preference or degree. Test: if you can substitute plus tard and the sentence still talks about timing, it is plus tôt (two words); otherwise it is plutôt.
Explanation
Plus tôt and plutôt are pronounced identically but spelled differently, and the space (or its absence) carries the entire grammatical distinction. Plus tôt is simply plus ("more") placed in front of the adverb tôt ("early"), forming the regular comparative "earlier." Plutôt is a single, fused adverb with its own independent meaning, roughly "rather," "instead," or "quite."
Plus tôt always concerns time. It compares one moment to another, exactly the way plus tard ("later") does: il est arrivé plus tôt que prévu ("he arrived earlier than planned"), je me suis levé plus tôt ce matin ("I got up earlier this morning"). Because it is a comparative built from plus + tôt, it can always be intensified or modified the way other comparatives are — un peu plus tôt ("a little earlier"), bien plus tôt ("much earlier") — and it always has an implicit or explicit point of comparison.
Plutôt, written as one word, does not compare two times at all. It expresses either a preference between two options ("rather than," often in plutôt que de + infinitive or plutôt que + noun) or a general degree, close to "quite" or "fairly": plutôt que de se plaindre, il agit ("rather than complaining, he takes action"); elle est plutôt contente ("she is quite pleased"). Neither of these senses has anything to do with clock time.
The decisive substitution test is to try swapping the word for plus tard. If the sentence still makes sense and is still fundamentally about when something happens, the original was plus tôt: il est arrivé plus tôt → il est arrivé plus tard both talk about timing, confirming the two-word form. If plus tard produces nonsense or changes the meaning entirely, the original was plutôt: elle est plutôt contente → elle est plus tard contente is meaningless, confirming plutôt.
A complementary cue is what the word attaches to. Plus tôt typically modifies a verb of action or arrival and answers the question "when?" (arriver plus tôt, partir plus tôt). Plutôt typically modifies an adjective (plutôt content), a whole clause introduced by que (plutôt que de rester), or a verb in the sense of "instead of doing X" — none of which is a question of timing.
In short: plus tôt (two words) is the comparative "earlier," always about time, and swappable with plus tard; plutôt (one word) means "rather/instead/quite," never about time, and swappable with assez or au lieu de. Confusing the two is a very frequent spelling slip precisely because the sound is identical and only the space signals the difference.
Examples
Il est arrivé plus tôt que prévu. — He arrived earlier than planned. (plus tôt: comparative of tôt, about timing, replaceable by plus tard.)
Je me suis levé plus tôt ce matin pour finir le rapport. — I got up earlier this morning to finish the report. (plus tôt modifies the verb se lever, answering "when?")
Plutôt que de se plaindre, il cherche des solutions. — Rather than complaining, he looks for solutions. (plutôt: preference/opposition, not about timing; plus tard would make no sense here.)
Elle est plutôt contente de son nouveau poste. — She is quite pleased with her new job. (plutôt modifies the adjective contente, meaning "quite/rather.")
On pourrait partir plus tôt, ou plutôt annuler carrément. — We could leave earlier, or rather cancel altogether. (Direct contrast in one sentence: plus tôt (timing) vs plutôt (preference).)
Common mistakes
Il est arrivé plutôt que prévu.
Il est arrivé plus tôt que prévu.
the sentence compares two points in time (arrival time vs. planned time), which requires the two-word comparative plus tôt ("earlier"); plutôt (one word) means "rather/instead" and has nothing to do with timing, so it cannot combine with que prévu here.
Related rules
homophonesspellingadverbs