fly-by-night

n (pl fly-by-nights) person who evades financial responsibility, esp debts, by (secretly) leaving; unreliable person 为躲债（偷偷）离去的人; 不可靠的人. adj unreliable or dishonest, esp in financial and business matters 不可靠的; 不诚实的（尤指在财务及商业事务上）: a fly-by-night company 无信誉的公司.

fluoridate, fluoridation, fluoride, fluoridization, fluoridisation, fluoridize, fluridise, fluorine, flurry, flush, flushed, fluster, flute, flutist, flutter, fluvial, flux, fly, fly into a temper, fly-away, fly-blown, fly-by, fly-fish, fly-fishing, fly-half, fly-paper, fly-past, fly-spray, flycatcher, flyer, flying, flying buttress, flying colours, flying column, flying doctor, flying fish, flying fox, flying jump (also flying leap), flying officer, flying picket, flying squad, flying start,