Edd-, in eddy. [A.S. ed-, back.]
Ef-. See Ex-.
El-, in ellipse, &c. See Ec- or Ex-.
Emb-, in ember days. [A.S. ymb-ryne, a circuit.]
En- (Gr.), in, on, as energy, endemic, emphasis—sometimes extended to Endo-, within, as endogen.
En-, Em- (Fr.—L.), in, into, as enlist; to make, as enlarge, enact, endure; before b and p, Em-, as embark, embolden. [Fr. en—L. in. See In- (L.), in, into.]
Enter- (Fr.), between, among, as entertain. [Fr. entre—L. inter-.]
Epi-, Ep-, Eph- (Gr.), on, as epitaph; during, as epoch, ephemeral. [Gr. epi; Sans. api, L. ob-.]
Es- (Fr. or Sp.—L.), out, as escape, esplanade. [O. Fr. or Sp. es—L. ex-.]
Eso- (Gr.), in, into, as esoteric. [From Gr. eis, into, whose form was prob. orig. ens, a strengthened form of En- (Gr.).]