lots

The word “lots” means a large amount or number of things (informal). In plain terms, an informal, casual way of saying "a lot" or "very much.".

“Lots” is pronounced lots (/lɑts/ in IPA).

Here is “lots” used in a sentence: “We still have lots of time before the flight.”

Depending on how it is used, “lots” can be a noun and an adverb.

“Lots” is a very common word in modern English.

“Lots” has 2 distinct senses listed in this dictionary. The most common is: a large amount or number of things (informal).

In meaning, almost none — both express a large amount and are interchangeable in most sentences: 'lots of time' or 'a lot of time.' 'Lots' feels slightly more casual, emphatic, and often warmer in tone. Both are informal; in formal writing, 'much,' 'many,' or 'a great deal' are usually preferred instead.

Informal. It belongs to everyday, conversational English and is perfectly correct in speech, texts, and casual writing. In academic essays, reports, or business documents, editors usually replace it with 'many,' 'much,' 'numerous,' or 'a great deal of,' which carry a more formal tone. The meaning stays the same; only the register changes.

Yes. 'Lots of' works with both countable and uncountable nouns, which is part of its convenience — 'lots of books' and 'lots of water' are equally correct. The verb that follows agrees with the noun: 'lots of milk is left' but 'lots of apples are left.' That flexibility is why 'lots of' is so common.