at full stretch

prep_phrase

prep_phrase

Using maximum resources.

We only just managed to finish on time by working at full stretch since first thing in the morning.
And so it proved as, with Neymar showing sleight of foot and flashes of genius, they spent much of the 90 minutes at full stretch in defence, fighting for any semblance of possession and put under stress by Brazil's pressing game.2017 November 14, Phil McNulty, “England 0-0 Brazil”, in BBC News:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.