- any of numerous elongated, snakelike marine or freshwater fishes of the order Apodes, having no ventral fins.
- any of several similar but unrelated fishes, as the lamprey.
Origin of eel
- any teleost fish of the order Apodes (or Anguilliformes), such as the European freshwater species Anguilla anguilla, having a long snakelike body, a smooth slimy skin, and reduced fins
- any of various other animals with a long body and smooth skin, such as the mud eel and the electric eel
- an evasive or untrustworthy person
Word Origin and History for eelier
Old English æl, from Proto-Germanic *ælaz (cf. Old Frisian -el, Middle Dutch ael, Dutch aal, Old Saxon and Old High German al, German Aal, Old Norse all), of unknown origin, with no certain cognates outside Germanic. Used figuratively for slipperiness from at least 1520s.
Idioms and Phrases with eelier
see slippery as an eel.