Definition of I in US English:


(also i)

nounPlural Is, Plural is, Plural I's

  • 1The ninth letter of the alphabet.

    • ‘The letter i is made up of a single minim, with or without a dot above it.’
    • ‘However, because of the Latin contributions to English, the letter "i" does not always comply.’
    1. 1.1 Denoting the next after H in a set of items, categories, etc.
  • 2The Roman numeral for one.

    • ‘Only assets included in Section I that are pledged should be reported here.’

nounPlural Is, Plural is, Plural I's

  • (in metaphysics) the subject or object of self-consciousness; the ego.

    ego, oneself, persona, person, identity, character, personality, psyche, soul, spirit, mind, intellect, inner man, inner person, inner woman, inner self, one's innermost feelings, one's heart of hearts
    View synonyms


On whether it is correct to say between you and I or between you and me, see between and personal pronoun. On whether it is correct to say Rachel and I went to Paris or Rachel and me went to Paris, see personal pronoun