under a cloud

Related to under a cloud: have a blast, quick off the mark

under a cloud (of suspicion)

Viewed with distrust and/or thought to be dishonorable. Ever since that leak of private emails, everything the CEO has done has been under a cloud. As far as I'm concerned, the victim's husband is under a cloud of suspicion until we interrogate him.
See also: cloud
Farlex Dictionary of Idioms.

under a cloud (of suspicion)

Fig. suspected of something. Someone stole some money at work, and now everyone is under a cloud of suspicion. Even the manager is under a cloud.
See also: cloud
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

under a cloud

Under suspicion, in trouble, or out of favor, as in Ever since his brother was accused of fraud, he's been under a cloud. This metaphoric expression calls up the image of a single black cloud hanging over an individual. [c. 1500]
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The American Heritage® Dictionary of Idioms by Christine Ammer.

under a cloud

COMMON If someone is under a cloud, they are generally not trusted or are disapproved of, because of something that they have done. The president of the bank resigned under a cloud several weeks ago. He departed as England coach under a cloud over his business dealings. With its leader under a cloud, these are difficult times for the party.
See also: cloud
Collins COBUILD Idioms Dictionary, 3rd ed.

under a cloud

under suspicion or discredited.
1992 Alasdair Gray Poor Things The career of this once famous soldier began as well as ended under a cloud.
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Farlex Partner Idioms Dictionary

under a ˈcloud

suspected of having done something wrong; in disgrace: He’d been stealing, so he was asked to resign, and he left under a cloud.
See also: cloud
Farlex Partner Idioms Dictionary

under a cloud

Under suspicion or in a state of disgrace.
See also: cloud
American Heritage® Dictionary of the English Language, Fifth Edition.

under a cloud, to be

To be under suspicion, in trouble, or out of favor. The metaphor calls up the image of sunny blue skies marred by one cloud over the head of a particular individual. Al Capp (1909–79), the cartoonist remembered best for his comic strip “L’il Abner,” included in it one ill-fated character, Joe Btfsplk, who went everywhere with a black cloud hanging over his head and brought misfortune with him. The term was already being used figuratively by 1500.
The Dictionary of Clichés by Christine Ammer
See also:
  • be under suspicion
  • catch a tiger by the tail
  • the blame for (something)
  • be in the right spot at the right time
  • cook the books
  • cook the accounts
  • chain of command
  • be half the battle (won)
  • a/the fish rots from the head down
  • a/the fish stinks from the head down