指不定
zhǐ​bu​dìngzhǐ​bù​dìng

maybe

zhǐ​bu​dìng maybe · to point uncertainly
  1. 指 zhǐ verb
    to point; to refer to
    to point at or to; to indicate; to refer to; to mean
  2. 不定 bù​dìng
    not sure
    uncertain or not sure; often used with question words to mean 'it's not clear (who/what/when...)'

zhǐ​bù​dìng probable
  1. 指 zhǐ verb
    to point; to refer to
    to point at or to; to indicate; to refer to; to mean
  2. 不定 bù​dìng adjective
    indefinite
    not fixed or certain; indeterminate; wandering or shifting; without a fixed result or settlement