This is the 4170th most frequent French word.
demandez
"Demandez" means "ask" or "request" in English.
The word "demandez" is used in its imperative form, giving a polite instruction to perform the action of asking.
Demandez à votre professeur si vous avez des questions.
Ask your teacher if you have any questions.
Here, "demander" is in its infinitive form, used as the main action in the indirect question.
Pouvez-vous me dire si je devrais demander de l'aide ?
Could you tell me if I should ask for help?
In this sentence, "demande" is used in third person present tense, describing an ongoing habit or action of the subject.