have a bad effect (on someone or something)

have a bad effect (on someone or something)

To affect someone or something adversely. I'm sorry I'm so cranky—this headache is having a bad effect on me. The rain didn't actually have a bad effect on our trip—we all had a lot of fun staying indoors and playing board games.

See also: bad, effect, have, someone

Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

have a bad effect (on someone or something)

to be bad for someone or something. Aspirin has a bad effect on me. Cold weather has a bad effect on roses.

See also: bad, effect, have

McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.