undependable
2.disappoint, prove undependable to; abandon, forsake.
3.This man is quite trick and undependable.
4.An unscrupulous or undependable person, especially one who leaves secretly without paying creditors.
5.A great opportunity can be lost if haphazard efforts lead to undependable results.
6.in the early 1950s computers were large and expensive and unreliable; an undependable assistant.
7.Yao is standing near the top edge of a cliff and the JVG drew this clear line here for him ? either be a trustworthy and dependable player or non-trustworthy and undependable?
8.It is pointed out that, at present, the unusual gas emission is the hardest hidden peril of accident to be cured; the gas accidents occur easily in such coal mines that are in the phase of capital construction, technological transformation or undergoing structural reform; hidden perils of gas exist on a wide scale in old mines or the mines being closed down soon; they also gravely exist in the so-called "star mines" because of their undependable work; and there are long-term hidden perils of gas accident in the mines in which grave accident frequently occurred, yet no lesson was drawn.
