R is a consonant (indicating “a”) but also if you say the word R it starts with a vowel (indicating “an”)

both look wrong :(

  • Luci
    link
    fedilink
    English
    arrow-up
    1
    ·
    edit-2
    6 months ago

    Any type of abbreviation follows the same rules as any other word. If it starts with a vowel sound, use an.

    I think an RTS looks fine and a RTS sounds odd.

    Edit: Forgot a source