consonants

/K AA1 N S AH0 N AH0 N T S/
noun
  1. 1

    A sound that results from the passage of air through restrictions of the oral cavity; any sound that is not the dominant sound of a syllable, the dominant sound generally being a vowel.

  2. 2

    A letter representing the sound of a consonant.

    The 19 unquestionable consonants in the English alphabet are B, C, D, F, G, H, J, K, L, M, N, P, Q, R, S, T, V, X, Z.

Source: https://en.wiktionary.org/wiki/consonant, https://en.wiktionary.org/wiki/consonants