Could anyone please explain the meaning of "laid-back" adj. Thank you in advanced

Could someone please explain me the meaning of this quote

I met this in the book "The Secret Garden"

"Mistress Mary quite contrary"

Thank you 

Happy New Year to everyone

Is fiance used for male or female?

Grammar as ... as 1. Horses are as good as modern transport in the forest. 2. The weather is always as hot as this in my country. 3. Silver isn't as expensive as gold. 4. New cars aren't as stylish as cars from the sixties. 5. Bicycles are as fast as cars in the city centre. 6. I'm not as young as I used to be.

What does electricity bill mean? It's from the dialog: - Have you got the money you owe me? - No. I just spent it on my electricity bill.

Homework (unit3) 1. Have you ever bought something you didn't need? 2. Have you given money to a stranger? 3. Have you ever been to a very expensive restaurant? 4. Have you ever driven an expensive car? 5. Have you ever lost money on the street?

Homework (grammar) 1. Have you ever been to Rio de Janeiro in the carnival? 2. I have given money to charity twice this week. 3. You have never helped me with my homework. 4. Have they ever done any volunteer work? 5. She has never left a big tip. 6. Have you ever given any money to a homeless person? 7. I have visited my grandmother several times this month.