one's damndest (noun) best shot: all-out try
Sinonime: absent, adrift,
astray, at sea, cast away, disappeared,
disoriented, down the drain, fallen between cracks,
forfeit, forfeited,
gone, gone astray,
hidden,
invisible, irrecoverable, irretrievable,
irrevocable, kiss goodbye,
lacking, minus, mislaid, misplaced,
missed, nowhere to be found, obscured,
off-course, out the window, strayed, unredeemed, vanished,
wandering,
wayward,
withoutAntonime: accomplishing,
found,
successful,
winning