I am looking for a slim Monospaced, serif font where the spaces in between words are smaller than the rest of the characters. Also with medium to smaller size line spacing. Anyone have any ideas?
Different width spaces kind of defeats the whole point of a monospaced font so I doubt there are many.
It would be easier to either:
Edit the width of the spaces of an existing font in a font editor. FontForge is a free open source font editor.
Change the word-spacing setting of whatever software you are using (most design software or word processors will have some form of word-spacing setting)
If you can't change the word-spacing, style the spaces. Either change the font or font size. You could do a search & replace—but you will obviously need to re-do this after any edits so it's not exactly ideal.
Monospaced but no mono space.
I havn't checked the metrics myself but this sounds like what you are looking for, and is supposedly designed to be more legible and aesthetic than most monospaced fonts.