Definition of non-past in English:

non-past

adjective

Grammar
  • Relating to or denoting a tense not expressing a past action or state.

noun

Grammar
  • A non-past tense.

    • ‘Intransitive, transitive, causative forms, past and non-past tenses (there was no future tense in Old Tamil), participal and verbal nouns, adjectival participles and the infinitive are found in the language of the inscriptions.’
    • ‘At the moment, tread is still the only Standard English non-past form of this verb; but that could change - trod might replace it completely in the not too distant future.’