Every (determiner)

1. Used to refer to all the individual members or units of a particular group without exception.
2. Used to indicate that something is done as a routine or repeated habit.
3. Used to indicate that something is taken as an average or typical example.

Origin:

Old english ǣfre gehwǣr 'always, everywhere'; from ǣfre 'ever' + gehwǣr 'everywhere'.

Examples:

1. Every student must pass the final exam to graduate.
2. She brushes her teeth every morning and every night.
3. The team practices every day after school.
4. Every person in the room was silent.
5. The company donates a portion of its profits to charity every year.
6. The children were laughing and playing every chance they got.
7. We analyze every aspect of the business before making decisions.
8. He has every right to express his opinion.
9. The restaurant offers a special menu every Sunday brunch.
10. I read every book on the subject before writing my thesis.