monotone

adjective

  1. 1

    sounded or spoken in a tone unvarying in pitch

    the owl's faint monotonous hooting

  2. 2

    of a sequence or function; consistently increasing and never decreasing or consistently decreasing and never increasing in value

noun

  1. 1

    an unchanging intonation

  2. 2

    a single tone repeated with different words or different rhythms (especially in rendering liturgical texts)

Synonyms

Also useful for “monotone”:Unscrambler