IPA: /ˌæn.ti.sɛn.təˈmɛn.təl/
KK: /ˌæn.ti.sɛn.təˈmɛn.təl/
Not showing or expressing feelings or emotions; rejecting emotional responses or sentimental attitudes.
His antisentimental approach to life made him seem cold to some people.
Antisentimental is formed from "anti-" (meaning against) and "sentimental" (from Latin "sentimentalis", meaning relating to feeling or emotion). The word describes a stance that is against or opposed to sentimentality or excessive emotion.
Think of being 'against' ('anti-') feelings or emotions ('sentimental'). This helps you remember that antisentimental refers to a rejection of sentimentality.