atonic

/eษชหˆtษ’nษชk/

IPA: /AH0 T AA1 N IH0 K/

adjective
  1. 1

    (of a sound or syllable) unstressed

  2. 2

    Not having tone (pitch)

  3. 3

    Lacking muscle tone.

  4. 4

    Characterized by atony, or want of vital energy.

    โ€œan atonic diseaseโ€

Source: https://en.wiktionary.org/wiki/atonic