Yes. Generally it is, whether caused by a virus or a bacteria. Some people are more susceptible than others.
If Infected-Very. If caused by infection-bacterial or viral-very contagious thru moisture droplets released through breathing, coughing, sneezing, etc. Avoid close contact and use good handwashing techniques.
Pass it by the mouth. Normally tonsillitis is not contagious unless the infected mucous lands on another person's mucosal membranes. Therefore, it is recommended to avoid kissing, drinking or eating from the same kitchenware of a person with tonsillitis. Cough with your hand covering your mouth, wash your hands and avoid sneezing on people. Those are the general precautions to be least contagious.
Not very. Chronic tonsillitis is a "chronic condition" not an "infectious" condition. What that means is that although your tonsils may be chronically infected with bacteria, you do not pass this infection to other people. It is not like a flu or a cold.
The. The short answer- possibly. A person with chronic tonsillitis that is caused by group a strep is contagious until they are 24 hours into a course of antibiotics. A person with chronic tonsillitis that is caused by other conditions such as acid reflux or enlarged tonsils is not contagious. As you may have guessed, the only way to find the answer is to see the doctor.
Maybe. Tonsillitis may be caused by group A strep, strep pyogenes, and therefore may be considered contagious however just talking will probably not spread it by the respiratory route. Wash hands, avoid close contact, kissing, and sharing beverages, shaking hands then touching the face. In other words take precautions. After 24 h of antibiotics no longer contagious. Viruses, fungi also cause tonsillitis.
Not likely. Talking no, kissing, sharing eating utensils and cups and not washing hands well, or others not covering their coughs are much greater risks for spreading tonsillitis germs.