volunteering
n. uncountable B1 Intermediate US //ˌvɔɫənˈtɪɹɪŋ// UK //vˌɒləntˈiəɹɪŋ// vol·un·teer·ing
n. the act of giving your time and skills to help others without being paid for it.
n. the practice of performing services for a charitable or community organisation without financial compensation.
Volunteering at the local animal shelter is very rewarding.
Many students find that volunteering in their community helps them develop leadership skills while building a stronger resume.
The non-profit organisation relies heavily on corporate volunteering to maintain its mentorship programs, as professional expertise is often more valuable than simple monetary donations.
Usage
Often used as a gerund noun to describe the activity itself.