Yes, also 'stern'.
Strict adherence to traditional forms and structures would not be a characteristic of Romanticism. Romanticism is known for its emphasis on emotion, nature, imagination, and individualism.
You could call her strict, but she was no more strict then any other ruler of eqypt
His biggest characteristic is his height.
You could describe any measurable characteristic as a trait.
There are many things that could be considered a characteristic of modernism. The shiny metal abstract art is considered a characteristic.
Mothers are often strict to train their child to do the right thing. However some mothers are not strict and quite often this means that their children get in trouble that could have been prevented.
could it be wild animals
A characteristic of a will to live would be the intentional avoidance of something that is or could be harmful to the organism.
Tell the truth. You can say: "I wish I could, but my extremely strict parents don't allow dating."
In general, if something is 'strict', it is regarded as severe and authoritarian. For example, a parent could have strict disciplinary standards for their children; or a schoolteacher could be strict with regards to the behaviour of the children under him/her. The term can also mean that a person closely follows or adheres to some principles - for example, a "strict vegan" might be one who adheres very closely to his practices of not eating animal products.
it could just mean someone else in the family has that characteristic.
Something you do, For instance my characteristic could be Helping people. Get it!