voluntary

1 ENTRIES FOUND:
voluntary /ˈvɑːlənˌteri/ Brit /ˈvɒləntri/ adjective
voluntary
/ˈvɑːlənˌteri/ Brit /ˈvɒləntri/
adjective
Britannica Dictionary definition of VOLUNTARY
1 
: done or given because you want to and not because you are forced to : done or given by choice
— opposite involuntary
2 
a  : provided or supported by people who do work without being paid
b  : doing work without being paid
3 
: able to be controlled consciously
— opposite involuntary

— voluntarily

/ˌvɑːlənˈterəli/ Brit /ˈvɒləntrəli/ adverb