Definition of -al in English:

-al

suffix

  • 1(forming adjectives) relating to; of the kind of.

    1. 1.1 From Latin words.
      ‘annual’
      ‘infernal’
    2. 1.2 From Greek words.
      ‘historical’
      ‘comical’
    3. 1.3 From English nouns.
      ‘tidal’
  • 2Forming nouns chiefly denoting verbal action.

    ‘arrival’
    ‘transmittal’

Origin

-al (sense 1) from French -el or Latin -alis; -al (sense 2) from French -aille or from Latin -alis functioning as a noun ending.

Pronunciation

-al

/əl/