1. undesirable - Noun
2. undesirable - Adjective
3. undesirable - Adjective Satellite
not wanted
not worthy of being chosen (especially as a spouse)
Source: WordNetIt is undesirable to believe a proposition when there is no ground whatsoever for supposing it is true. Bertrand Russell
A scientist can hardly meet with anything more undesirable than to have the foundations give way just as the work is finished. I was put in this position by a letter from Mr. Bertrand Russell when the work was nearly through the press. Gottlob Frege
My own view is that this planet is used as a penal colony, lunatic asylum and dumping ground by a superior civilization, to get rid of the undesirable and unfit. I can't prove it, but you can't disprove it either. Christopher Hitchens
I wish to propose for the reader's favourable consideration a doctrine which may, I fear, appear wildly paradoxical and subversive. The doctrine in question is this: that it is undesirable to believe a proposition when there is no ground whatever for supposing it true. Bertrand Russell
It has long been known for sure that the sight of tasty food makes a hungry man's mouth water; also lack of appetite has always been regarded as an undesirable phenomenon, from which one might conclude that appetite is essentially linked with the process of digestion. Ivan Pavlov
Without human companions, paradise itself would be an undesirable place. African Proverb