IPA: /ˈbɛnɪˌfæktrəs/
KK: /ˈbɛnɪˌfæktrɪs/
A woman who provides help or support, especially in the form of money or resources.
The benefactress donated a large sum to the local hospital to help improve its facilities.
Benefactress → It is formed from "bene" (meaning well or good) and "facere" (meaning to do or make), with the suffix "-ess" indicating a female. The word refers to a woman who does good or provides help, especially in a charitable context.
Think of a woman who 'does good' ('bene' means well and 'facere' means to do) — that's why a benefactress is a woman who helps others.
No commonly confused words.