Set 21 · Study 1 / 5

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credible

adjective/ˈkrɛdɪbəl/

capable of being believed or accepted as true

The scientist presented credible evidence to support her claim.

believablereliabletrustworthy
word origin — from Latin 'credibilis', from 'credere' meaning 'to believe'

Proficient — Set 21

Set 21 of Proficient covers 5 words: credible, adjacent, placid, omnipotent, tenacious. Each entry below includes its definition, an example sentence, and synonyms — practice them with the interactive cards above.

  1. credible · adjective/ˈkrɛdɪbəl/

    capable of being believed or accepted as true

    The scientist presented credible evidence to support her claim.

    Synonyms: believable, reliable, trustworthy

    Origin: from Latin 'credibilis', from 'credere' meaning 'to believe'

  2. adjacent · adjective/əˈdʒeɪ.sənt/

    next to or adjoining something else

    The park is adjacent to the school, so the children can play there during recess.

    Synonyms: next, adjoining, neighboring

    Origin: from Latin 'adjacens', meaning 'lying near, bordering on'

  3. placid · adjective/ˈplæsɪd/

    calm and peaceful, free from disturbance

    The placid lake reflected the blue sky perfectly.

    Synonyms: tranquil, serene, calm

    Origin: from Latin 'placidus' meaning 'calm, peaceful'

  4. omnipotent · adjective/ɑmˈnɪp.ə.tənt/

    having unlimited power or authority

    Many people believe that God is omnipotent and can do anything.

    Synonyms: all-powerful, mighty, supreme

    Origin: From Latin 'omnis' meaning 'all' and 'potens' meaning 'powerful'

  5. tenacious · adjective/təˈneɪ.ʃəs/

    holding firmly to something or refusing to give up

    She is a tenacious learner who never gives up on her studies.

    Synonyms: persistent, determined, stubborn

    Origin: from Latin 'tenax', meaning 'holding fast'