Uttermost
Vine's Expository Dictionary of NT Words [1]
the neuter of the adjective panteles, "complete, perfect," used with eis to ("unto the"), is translated "to the uttermost" in Hebrews 7:25 , where the meaning may be "finally;" in Luke 13:11 (negatively), "in no wise."
"an end," is rendered "the uttermost" in 1—Thessalonians 2:16 , said of Divine wrath upon the Jews, referring to the prophecy of Duet. 28:15-68; the nation as such, will yet, however, be delivered ( Romans 11:26; cp. Jeremiah 30:4-11 ). The full phrase is eis telos, "to the uttermost," which is probably the meaning in John 13:1 , "to the end."
Matthew 5:26Last. Acts 24:22DetermineEnd
King James Dictionary [2]
UT'TERMOST, a. utter and most. Extreme being in the furthest, greatest or highest degree as the uttermost extent or end the uttermost distress.
UT'TERMOST, n. The greatest. the uttermost we can do is to be patient.
To the uttermost, in the most extensive degree fully.
Hebrews 8 .
Webster's Dictionary [3]
(1): ( n.) The utmost; the highest or greatest degree; the farthest extent.
(2): ( a.) Extreme; utmost; being; in the farthest, greatest, or highest degree; as, the uttermost extent or end.
International Standard Bible Encyclopedia [4]
ut´ẽr - mōst : A pleonastic compound of a comparative ("utter"; compare "outer") and a superlative ("most"), in the King James Version used interchangeably with the ordinary superlative forms "utmost" (compare Matthew 12:42; Luke 11:31 ) and "outmost" (compare Exodus 26:4 , Exodus 26:10 ). The Revised Version (British and American) adds still another form, "outermost," in 2 Kings 7:5 , 2 Kings 7:8 (the King James Version "uttermost"). the Revised Version (British and American) has made a few changes to secure a more accurate translation ( Jeremiah 9:26; Joel 2:20 , etc.) or to give uniformity ( Exodus 26:4; Matthew 5:26; Matthew 12:42 , etc.), but for the most part has left the King James Version undisturbed.