informal adj.

VERBS be | become | remain

ADV. extremely, highly, very | fairly, quite, rather, relatively Our meetings are relatively informal. | purely These meetings should remain purely informal, with no obligation on either side. | cheerfully, delightfully

You can also check Google Dictionary: informal (English, 中文解释 ), wordnet sense

  • IELTS Speaking Topics (part 1,2,3)
  • IELTS Essay Writing Topics
  • IELTS Writing Ideas