1 efi
a, m., in old writers almost always ifi:—doubt, Greg. 37, Fms. iii. 8, x. 392, Hkr. i. 223; vera ifa, to be in doubt, Mar. 17; enn er eptir ifi í hug mínum, 623. 26; án ifa (efa), without doubt, Fms. x. 336, Skálda 210: suspicion, Fms. x. 260.
2 efi
COMPDS: efalauss, efalausligr, efasamr, efasamliga, efasemð, efasök.