Is a lot singular or plural? The answer is “It can be either.” A lot can modify a noun, giving an indefinite idea of quantity. But it can be used on its own as an indefinite pronoun.
For example, you can say A lot of flour is required for this recipe or A lot is required for this recipe. Here, a lot takes a singular verb (is). Why? Because flour is a “noncount noun” and is treated as singular.
But you can also say A lot of people like pizza or A lot like pizza. Here, a lot takes a plural verb (like). Why? Because people is a “count noun”—you could arrive at an exact number (if you felt like spending your time that way).
Is A Lot Singular or Plural? | Examples
Don’t be fooled by the a in a lot. While the indefinite article a is the go-to marker for singular in English (a cat, a policy, a(n) eggplant), it just doesn’t play that role in a lot, which acts as a unit.
In fact, you could use much in place of a lot for cases where the singular form is needed, and many in place of a lot in cases where the plural is needed:
Much is required for this recipe. [where much replaces a lot of flour]
Many like pizza. [where many replaces a lot of people]