To count on
Example: They count on support
Definition
"To count on" means to rely on someone or something for help, support, or a particular outcome. It implies trust and expectation that the person or thing will be dependable or fulfill a promise or need.
Etymology
The phrase "to count on" originates from the verb 'count,' which historically meant to reckon or calculate numbers. Over time, it evolved figuratively to mean depending or relying on something, similar to counting on a number to reach a certain total. This figurative use dates back to at least the 16th century.
