What part of speech is 'less' in the following sentence?

Thinking SpainHi teachers,What part of speech is 'less' in the following sentence? Is it an adjective? yes
He earns less money than they do.Thanks in advance.

It is a determiner.
Determiners are usually treated as a separate part of speech.
I am not a teacher.

Hi canadian45,
Thank you for your reply. So, it is the comparative of little? Right?

TS

Mentee is right: Less is a determiner, although most dictionaries erroneously label determiners as adjectives.

Thinking SpainHi canadian45,Thank you for your reply. So, it is the comparative of little? Right?TS

yes

MenteeIt is a determiner.

Hi,
Thank you for your reply. Are you sure?

TS

Aspara GusMentee is right: Less is a determiner, although most dictionaries erroneously label determiners as adjectives.

Those wrong dictionaries are good enough for me.

Aspara GusMentee is right: Less is a determiner, although most dictionaries erroneously label determiners as adjectives.

Hi
Thank you for your reply. We use general determiners to talk about people or things without saying exactly who or what they are. Is it the case in 'less money'? What could a synonym for 'less' be in this case?

TS

canadian45Those wrong dictionaries are good enough for me

Hi,
Is there a difference in meaning?

TS

Thinking SpainThank you for your reply. Are you sure?

Yes, I am absolutely sure.
Check the following links to know why such a distinction is made.
http://www.brighthubeducation.com/esl-lesson-plans/37875-difference-between-determiners-and-adject