(每日一词）altruistic

Altruistic  /ˌæl.truˈɪs.tɪk/ adj. 利他的，无私心的

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

1) 词根：altru- 其他(alter)
2) 后缀：-ist 名词后缀；-ic 形容词后缀

e.g. I doubt whether her motives for donating the money are altruistic—she’s probably looking for publicity. 我怀疑她捐钱的动机是否出于无私——很可能是沽名钓誉罢了。