froggish
/ˈfrɒɡɪʃ/Chiefly depreciative in later use
adjective
Of, relating to, or characteristic of a frog; (in later use) especially resembling (that of) a frog, frog-like.
Origin
Mid 17th century; earliest use found in William Struther (c1578–1633), Church of Scotland minister. From frog + -ish.