0 A strict person makes sure that children or people working for them behave well, and does not allow them to break any rules. -- rígido, severo, austero
1 If a rule, law, etc. is strict, it must be obeyed. -- rígido, severo
She gave me strict instructions to be there by ten.
2 always behaving in a particular way because of your beliefs -- rigoroso
She’s a strict vegetarian.