they say
• it is rumoured.
• "they say he's ruthless and unscrupulous"
Similar:
be reported,
be thought,
be believed,
be alleged,
be rumoured,
be reputed,
be put about,
be described,
be asserted,
apparently,
seemingly,
it seems that,
it appears that,
(so) they say,
(so) the story goes,
by all accounts,
rumour has it,
the rumour is,