thinner
The comparative form of thin is thinner.
It is thinner.
thinner
thinner, thinnest
thinner, thinnest
The comparative form of thin is thinner.
Comparative: thinner Superlative: thinnest
It is thinner.
thinner
thinner, thinnest
thinner, thinnest
thinner, thinnest
thinner, thinnest
thinner, thinnest
There is no procedure (except maybe looking it up in the dictionary, if you don't know on your own). The comparative of thin is thinner; the superlative is thinnest.
The comparative form of "thin" is "thinner," and the superlative form is "thinnest." These forms are used to compare the thickness of two or more objects or individuals. For example, you might say, "This book is thinner than that one," or "She is the thinnest person in the group."
Big Small Tiny Tall Fat Thin Smart Stupid Strong Weak Tidy Messy Dirty Clean