Answer:

eas

AnswerCrossword Clue
EAS.. in "echo"
EAS.. in elephant
EAS.. in echo
EAS... in elephant
EAS.. in "easy"
EAS.. in "euphony"
EAS".. in 'easy' "
EASRivers, in England
EASConsultants like Keynes: Abbr.
EAS... in eagle
EAS"-- in elephant"