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Synonyms for Lose (same or very similar meaning)

WordNet sense 1 (fail to make money in a business; make a loss or fail to profit):
turn a loss

WordNet sense 2 (fail to perceive or to catch with the senses or the mind):
miss

WordNet sense 3 (place (something) where one cannot find it again):
mislay, misplace

WordNet sense 4 (retreat):
recede, drop off, fall back, fall behind

WordNet sense 5 (be set at a disadvantage):
suffer


From the ODE community, based on WordNetadd/edit