IPA: /ˈæntiˌtjuːmər/
KK: /ˈæntiˌtumər/
Describing something that works against or prevents the growth of harmful tumors in the body.
The new medication has antitumor properties that help fight cancer.
Antitumor is formed from "anti-" (meaning against) and "tumor" (from Latin "tumor", meaning swelling or mass). The word antitumor refers to something that works against tumors or abnormal growths in the body.
Think of 'anti-' meaning against, and 'tumor' referring to a swelling or mass. This helps you remember that antitumor means something that fights against tumors.
No commonly confused words.