Toad is from Old English tadige or tada ('toad'), of obscure origin with no clear cognates outside English. Important recorded forms include tada (Old English). The wording preserves that uncertainty: the older history is best read as a cautious account rather than a fully settled chain. The modern sense continues the older lexical line without requiring a separate origin. In current use it covers a tailless amphibian with dry warty skin, similar to a frog. The wider family includes derived forms such as toady and toadstool and related words such as tadpole and toadstool.