slimmer

A crocodile has a slimmer jaw

The comparative form of "slim" is "slimmer."

You can use the word "slimmer" in these sentences-

1- "You can tell the French girl was slimmer than the Greek woman"

2- "I just got a pair of slimmer jeans once i lost weight"

3- "His chances of passing the test without studying was slimmer than that of the boy who studied"

He looks much slimmer in a suit and tie than in his casual clothes.

She's much slimmer than she was six months ago because she started working out everyday.

not fat