further along in complexity
The successful dogs now start advanced training.

relating to or producing insensibility
Because of his extreme fear, the dentist had to use anesthetics to clean his teeth.

a conclusion or opinion formed about someone or something after lengthy consideration
Most courses have some kind of assessment to test how the students are performing.

a time when someone needs help right away
There is a huge fire in my house! This is an emergency!

to act with something else in order to produce a particular effect
interacting with others is a great way to learn new ideas.

using or having to do with machines
The mechanical parts are old in this car.

the care of the sick or infirm
Her parents said nursing was a job for poor women.

related to your body
Biking is good for your physical health.

a sign of an illness or problem
He didn't have any of the usual symptoms from the disease.

changing so frequently that it is difficult to know what will come next; changing one's behavior so often that it is difficult to know what to expect
The weather in my country is so unpredictable in the summer.