Froglike

Though it was not far to Jamiltepec, once outside the village, the chauffeur and his little attendant lad began to get frightened, and to go frog-like with fear.

I have seen, too, a frog-like beast with protruding green eyes, which is simply a gaping mouth with a huge stomach behind it.

a froglike croak

Parsons, Winston's fellow-tenant at Victory Mansions, was in fact threading his way across the room--a tubby, middle-sized man with fair hair and a froglike face.

It was the typical chatter of the moment when each woman was showing off her baby, held against her froglike belly.

to hop froglike

In all our adventures I do not know that I have ever seen a more strange sight than this impassive and still dignified figure crouching frog-like upon the ground and goading to a wilder exhibition of passion the maddened hound, which ramped and raged in front of him, by all manner of ingenious and calculated cruelty.