IPA: /ˌæn.ti.æŋˈzaɪ.ə.ti/
KK: /ˌæn.ti.æŋˈzaɪ.ə.ti/
Describing something that helps to prevent or reduce feelings of anxiety.
The doctor prescribed an antianxiety medication to help her relax during stressful situations.
Antianxiety is formed from "anti-" (meaning against) and "anxiety" (from Latin "anxietas", meaning uneasiness or anxiety). The word describes something that works against or alleviates feelings of anxiety.
Think of 'against' ('anti-') and 'uneasiness' ('anxiety') to remember that 'antianxiety' refers to something that helps reduce feelings of anxiety.