Definition of strict adjective from the Oxford Advanced Learner's Dictionary

      

    strict

     adjective
    adjective
    BrE BrE//strɪkt//
     
    ; NAmE NAmE//strɪkt//
     
    (stricter, strictest)
     
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  1. 1  that must be obeyed exactly strict rules/regulations/discipline She left strict instructions that she was not to be disturbed. There are strict guidelines on how the work is to be carried out. He told me in the strictest confidence (= on the understanding that I would tell nobody else). She's on a very strict diet.
  2. 2  demanding that rules, especially rules about behaviour, should be obeyed a strict teacher/parent/disciplinarian She's very strict about things like homework. They were always very strict with their children.
  3. 3  obeying the rules of a particular religion, belief, etc. exactly a strict Muslim a strict vegetarian
  4. 4[usually before noun] very exact and clearly defined It wasn’t illegal in the strict sense (of the word).
  5. Word Origin late Middle English (in the sense ‘restricted in space or extent’): from Latin strictus, past participle of stringere ‘tighten, draw tight’.Extra examples He told me in the strictest confidence. He was a great teacher but a strict disciplinarian. I had a very strict upbringing. She left strict instructions that she must not be disturbed. She’s on a very strict diet. She’s very strict about things like homework. There are strict regulations regarding the number of hours drivers can work.
See the Oxford Advanced American Dictionary entry: strict