Cases of word usage

1) (especially) the weak physical condition caused by lack of water in one's body (dehydration)

2) the expression of one's low opinion of, lack of respect for, (a person) (disrespect)

3) (a) continuous (period of) dry weather causing suffering because of lack of food and water (drought)

4) (an almost) complete lack of food in a region (famine)

5) lack of hope (hopelessly)

6) (of a person) knowing little or nothing; resulting from lack of knowledge (ignorant)

7) the lack of power or means (inability)

8) (an instance of) a lack of seriousness (levity)

9) a wrong opinion, idea or act because of wrong information, lack of ability or skill etc (mistake)

10) definite; sure; leaving no room for doubt; of the sort caused by a lack of electrons (positive)