At least Definition 1 of 3Pro Tip 1/3Minimum Quantity Use 'at least' when specifying the smallest amount or number something could be. We need at least five more chairs for the party. Pro Tip 2/3Expectation Setting Use 'at least' to set low expectations or to ensure a bottom line is understood. Expect to wait at least 30 minutes for your food. Pro Tip 3/3Goal Assurance 'At least' can imply that more is preferred or better, but a certain amount is guaranteed. Please read at least one book per month.