I. ˈəd.ə(r)ˌmōst, ˈətə- also chiefly Brit -_məst adjective
Etymology: Middle English, alteration (influenced by most ) of uttermest, from utter (I) + -mest (as in utmest utmost)
1. : farthest out : most remote : outermost
to the uttermost parts of the earth — Kemp Malone
from the extreme west to the uttermost east — Douglas Carruthers
2. : being in the farthest, greatest, or highest degree : extreme , utmost 2
she had the uttermost confidence in the rogue — O.S.J.Gogarty
reach the uttermost peak of position — Irving Stone
in the uttermost distress
3. archaic : last — used chiefly in the phrase the uttermost farthing
II. noun
Etymology: Middle English, from uttermost (I)
: utmost
done her uttermost to encourage him — Edith Sitwell
to the uttermost of our capacity — H.S.Truman