i am using text in bigger font size as the font size increases thickness also increases
how can i use bigger font size with reduced thickness.



please answer quickly
thanks

Do you have stroke set on your font? If so remove it or change its width.

But if you don't like what the font looks like when the size is big you can use Dynamic offset (under Path menu), but you first have to convert the text to a path, ungroup the letters and combine into a single path.