The term 'UTMOST EXTENT' can be broken down into five separate words: LIMIT (5 letters), NTH (3 letters), TETHER (6 letters), NTHPOWER (8 letters), and NTHDEGREE (9 letters). The word 'LIMIT' refers to a restriction or boundary, while 'NTH' is an ordinal number indicating a position in a series. 'TETHER' means to tie or bind something, and 'nthpower' and 'nthdegree' are mathematical terms referring to the power or degree of a number. Taken together, these words suggest that the utmost extent is the furthest boundary, the highest degree, or the greatest power that can be reached.