in·suf·fi·cien·cy 
(ĭn′sə-fĭshən-sē)
(ĭn′sə-fĭshən-sē)n. pl. in·suf·fi·cien·cies
1. The quality or state of being insufficient, especially:
a. Inadequate supply: an insufficiency of funds.
b. Inability of a bodily part or organ to function normally: cardiac insufficiency.
c. Moral or mental incompetence.
2. A failing; an inadequacy: pointed out the insufficiencies in my report.
- on the road
- on the rocks
- on the ropes
- on the run
- on the same wavelength
- on-the-scene
- on the shelf
- on the side
- on the sly
- on the spectrum
- on the spot
- on the square
- on the street
- on the strength of
- on the string
- on the surface
- on the table
- on the take
- on the tapis
- on the tip of (one's) tongue
- on the tip of one's tongue
- on the tip of tongue
- on the town
- on the up and up
- on the up-and-up and up