What part of speech is “please”

Please is sometimes used as an uncountable noun, meaning politeness or good manners.

'I thank you for your please.' This usage is typically only found in very poetic or dramatic language.

Please as a verb is typically used as a polite request for something. Additionally, please can also be used to politely ask someone to do something. It is also sometimes used to make a request more forceful.

'Please be careful with that vase.'

'Would you please take out the trash?'

'Please finish your homework!'

When using please as a verb, remember that it will always come before the verb it is modifying. Additionally, please is typically used to make a polity request, so be mindful of the tone you’re using when spelling it.