Definitions

1. adjective

having or resembling shag; shaggy; covered with shag or shaggy growth

“The shaggier dog in the shelter was harder to adopt.”

2. comparative

more shaggy or having more shag

“The shaggier coat was made from the fur of a bear.”

3. superlative

most shaggy or having the most shag

“The shaggiest of all the dogs in the park was a wolf.”