n. 25B6; noun
a length of three or four metres 007C; the whole length of the valley : EXTENT, distance, linear measure, span, reach; area, expanse, stretch, range, scope.
a considerable length of time : PERIOD, duration, stretch, span.
a length of blue silk : PIECE, swatch, measure.
MPs criticized the length of the speech : PROTRACTEDNESS, lengthiness, extent, extensiveness; prolixity, wordiness, verbosity, verboseness, long-windedness.
25A0; at length
he spoke at length : FOR A LONG TIME, for ages, for hours, interminably, endlessly, ceaselessly, unendingly.
he was questioned at length : THOROUGHLY, fully, in detail, in depth, comprehensively, exhaustively, extensively.
his search led him, at length, to Seattle : AFTER A LONG TIME, eventually, in time, finally, at (long) last, in the end, ultimately.
25A0; go to any length(s) DO ABSOLUTELY ANYTHING, go to any extreme.