altruistic

US /ˌæl.truˈɪs.tɪk/
UK /ˌæl.truˈɪs.tɪk/
1.

vị tha

showing a wish to help or bring advantages to others, even if it results in disadvantage for yourself:

:
I doubt whether her motives for donating the money are altruistic - she's probably looking for publicity.