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irregular (EN)
adjetivo, substantivo

adjetivo “irregular”

forma base irregular (more/most)
  1. irregular
    Her heartbeat was irregular, speeding up and slowing down unpredictably.
  2. suspeito
    What the accountant is doing seems very irregular.
  3. irregular
    The path through the woods was irregular, making it difficult to walk without tripping.
  4. irregular
    The verb "to go" becomes "went" in the past tense, making it an irregular verb.
  5. irregular
    The shape of the plot was irregular, with one side noticeably longer than the others.

substantivo “irregular”

sg. irregular, pl. irregulars
  1. guerrilheiro (quando se refere a um soldado não parte de um exército oficial)
    During the conflict, the village was defended by a group of irregulars who knew the terrain better than the invading army.
  2. frequentador ocasional (quando se refere a uma pessoa que não visita frequentemente um lugar)
    At the weekly book club meetings, it's easy to spot the irregulars because they often have to ask for updates on the group's discussions.