No, sorry (I’d never heard of this word, but clue is straightforward)

Throttlebottom? 

All yours, nfs

Apparently, inhibit growth, but stay muscular.

(8 letters)

Apparently, inhibit growth, but stay muscular.

(8 letters)

 

_ _ a _ _ _ _ _

Apparently, inhibit growth, but stay muscular.

(8 letters)

 

_ _ a _ _ a _ _

Stalwart….?

Yes twyngwyn.

Goat island growth (9)


@twyngwyn wrote:

Goat island growth (9)


         _a_______