SINCE 1828
believe in
phrasal verb
believed in;
believing in;
believes in
Definition of believe in
1
: to have faith or confidence in the existence of (something)
Do you believe in ghosts?
2
: to have trust in the goodness or value of (something)
She believes in (the value of) regular exercise. I believe in working hard to achieve success. She doesn't believe in using pesticides.
3
: to have trust in the goodness or ability of (someone)
Despite his problems, his parents still believe in him.
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