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des·ul·to·ry
ˈdesəlˌtôrē/
adjective
adjective: desultory
  1. lacking a plan, purpose, or enthusiasm.
    “a few people were left, dancing in a desultory fashion”
    synonyms: casual, cursory, superficial, token, perfunctory, half-hearted, lukewarm;

    random, aimless,erratic, unmethodical, unsystematic, chaotic, inconsistent, irregular, intermittent,sporadic, fitful
    “the desultory interest you have in your child’s welfare is appalling”
    antonyms: keen
    • (of conversation or speech) going constantly from one subject to another in a halfhearted way; unfocused.
      “the desultory conversation faded”
    • occurring randomly or occasionally.
      “desultory passengers were appearing”
Origin
late 16th century (also in the literal sense ‘skipping around’): from Latin desultorius ‘superficial’ (literally ‘relating to a vaulter’), from desultor ‘vaulter,’ from the verb desilire .