What is the comparative degree of little?

The standard comparative of 'little' is 'less'. This is used for quantity. For physical size, you would typically just say 'smaller'. It's an irregular one

The comparative degree of little is less. For example:- She has little money. (positive degree)- She has less money than her brother. (comparative degree) This follows the irregular comparison pattern in English grammar.

While the regular rule is to add “-er” for comparative, little doesn’t follow that. Instead of littler, the correct comparative is less. The superlative form is least. This irregularity often confuses learners of English.

Some grammarians argue that littler can be used in informal speech when talking about size rather than amount. For example: “My younger daughter is littler than my elder one.” But when referring to quantity, less is the standard comparative degree of little.