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Related to depend on: depend upon
depend (up)on someone or something
to rely upon someone or something. (Upon is formal and less commonly used than on.) Can I depend on you to do this right? You can depend upon me for help.
depend onor depend upon
1. To be contingent upon something or someone for an outcome: Whether or not we go on the picnic depends on the weather.
2. To rely on something or someone, especially for support or maintenance: Children depend on adults for food and shelter.
3. To place trust or confidence in someone or something: You can depend upon my honesty.
4. To have a chronic or compulsive need for something; be addicted to something: As time went by, he began to depend on painkillers to get him through the day.