English to English

noun (n)

• an indifference to pleasure or pain(noun.attribute)

  Synonym:
  stolidity, stolidness
  

  source: wordnet30
• (philosophy) the philosophical system of the Stoics following the teachings of the ancient Greek philosopher Zeno(noun.cognition)

  source: wordnet30
• The opinions and maxims of the Stoics.(noun)

  source: webster1913