ひょっと

ひょ

っ

と

JLPTN1Freq.FrequencyTop 20,000

ひょっとする · noun or participle which takes 'suru'

Meanings

Used in fixed expressions ひょっとすると, ひょっとしたら, and ひょっとして to express a possibility or conjecture. Rarely used alone.

Appears in the expression ひょっとしたら or ひょっとして to mean 'by chance' or 'accidentally'. The standalone use is rare; usually part of a set phrase.

もしか sense 1
もしか is another bound adverb that, like ひょっと, mainly appears combined with すると/したら/して to hedge a guess, though もしか sounds slightly more common in casual speech.
たまたま sense 2
たまたま is a common standalone word for 'by chance', whereas ひょっと in this sense is rare alone and usually locked into the phrase ひょっとしたら/ひょっとして.
多た分ぶんN5sense 1
たぶん is a plain, freely usable word for 'probably', while ひょっと only expresses a weaker, more tentative possibility and almost always needs すると/したら/して attached.

ひょっこり
ひょっこり describes someone or something appearing suddenly and unexpectedly, while ひょっと expresses a tentative guess about possibility, not a sudden appearance.
ひょいとN1
ひょっと looks and sounds similar to ひょいと but means 'by any chance' (as in ひょっとして), not 'suddenly' or 'nimbly'.

A mimetic word (擬態語) of uncertain origin, likely related to the idea of a sudden or unexpected occurrence. The exact derivation is unclear.