efn-

• efen-, emn-, em-, efne-

From the adjective efn, descended from Proto-Germanic *ebnaz.

• IPA^(key): /efn/, [evn]

efn-

1. denoting equality: equal, equally

   ‎efn- + ‎eald (“old”) → ‎efneald (“of the same age”)

   ‎efn- + ‎gōd (“good”) → ‎efngōd (“just as good”)

   ‎efn- + ‎niht (“night”) → ‎efnniht (“equinox”)

   ‎efn- + ‎heorte (“heart”) → ‎efnheorte (“harmony, concord”)

2. denoting togetherness: co-, fellow-

   ‎efn- + ‎cempa (“soldier”) → ‎efncempa (“fellow soldier”)

   ‎efn- + ‎þrōwian (“to suffer”) → ‎efnþrōwian (“to sympathize”)

   ‎efn- + ‎wyrċan (“to work”) → ‎efnwyrċan (“to work together, cooperate”)

   ‎efn- + ‎wyrhta (“worker”) → ‎efnwyrhta (“co-worker”)

• Middle English: even-, euen-
  • English: even-