Perhaps means possibly, said in a slightly formal way. Perhaps not, perhaps so, perhaps you are right.
It hedges a statement without committing to it, and in British use it also softens a suggestion into a near-instruction: perhaps you could send it today. Perhaps not is a polite refusal. Maybe is the everyday alternative and sits more easily in speech. Note that perhaps is per plus hap, chance — the same hap as in happen, happy and mishap, all of which are about luck.
1adverbperhapsPossibly.~98%
“Perhaps we should leave early to avoid the traffic.”
2adverbsoftenUsed to soften a suggestion.~2%
“Perhaps you could turn the music down a little?”
Shares are an estimate: a language model read 16 sentences found in the wild and placed 16 of them on a sense — a count of our sample, not a measurement of English.
perhaps is an expression of possibility.
Middle English perhappes is per plus hap, chance, plus -s, modelled on perchance. Happen, happy and haphazard all come from the same hap, so happiness was originally good luck.
Middle English
perhappes
English, today
perhaps
Built from
From Middle English perhappes, from perhap. From Middle English perhappes, perhappous, variant of earlier perhap (“perhaps, possibly”), equivalent to per- + hap + -s, on model of Middle English parchaunce (modern perchance).
Etymology from Wiktionary, CC BY-SA