Princeton's WordNet

1. cynical, misanthropic, misanthropical(adj)

   believing the worst of human nature and motives; having a sneering disbelief in e.g. selflessness of others

Kernerman English Learner's Dictionary

1. cynical(adjective)ˈsɪn ɪ kəl

   not believing that good things can happen

   He's becoming cynical in his old age.

Wiktionary

1. cynical(Adjective)

   of or relating to the belief that human actions are motivated only or primarily by base desires or selfishness.

2. cynical(Adjective)

   skeptical of the integrity, sincerity, or motives of others.

3. cynical(Adjective)

   bitterly or jadedly distrustful or contemptuous; mocking.

4. cynical(Adjective)

   showing contempt for accepted moral standards by one's actions.

5. cynical(Adjective)

   like the actions of a snarling dog.

6. Cynical(Adjective)

   Of or relating to the Cynics, a sect of ancient Greek philosophers who believed virtue to be the only good and self-control to be the only means of achieving virtue.

7. Cynical(Adjective)

   Concerned only with one's own interests and disregarding accepted standards to achieve them: A cynical fool

Origin: Originated 1580–90 from cynic+-al.

Webster Dictionary

1. Cynical(adj)

   having the qualities of a surly dog; snarling; captious; currish

2. Cynical(adj)

   pertaining to the Dog Star; as, the cynic, or Sothic, year; cynic cycle

3. Cynical(adj)

   belonging to the sect of philosophers called cynics; having the qualities of a cynic; pertaining to, or resembling, the doctrines of the cynics

4. Cynical(adj)

   given to sneering at rectitude and the conduct of life by moral principles; disbelieving in the reality of any human purposes which are not suggested or directed by self-interest or self-indulgence; as, a cynical man who scoffs at pretensions of integrity; characterized by such opinions; as, cynical views of human nature

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