impotence (part of speech: noun)
inferiority (part of speech: noun)
imperfection (part of speech: noun)
insufficiency (part of speech: noun)
shortage (part of speech: noun)
inutility (part of speech: noun)
- As the extent of his reading became gradually disclosed, however, her feeling of inadequacy grew, and she resolved in the future to make better use of her odd moments. - "A Modern Chronicle, Volume 5", Winston Churchill.
- He can relieve himself from such accountability only by showing that his equipment was inadequate and that the inadequacy was the result of causes beyond his control. - "Campaigning in Cuba", George Kennan.
- This view was formerly supported by the author but the chloramine treatment at Ottawa and other places has demonstrated the inadequacy of this explanation. - "Chlorination of Water", Joseph Race.