IPA: /ˈʌndjʊləs/
KK: /ʌnˈdʒuːləs/
Having a wavy or wave-like form or motion.
The undulous landscape was beautiful, with rolling hills and valleys.
Undulous → It is formed from "undula" (from Latin "unda", meaning wave) and the suffix "-ous" (meaning full of or having the quality of). The word "undulous" describes something that has the quality of waves or is wavy in form.
Think of the word 'wave' ('unda') to remember that 'undulous' means having a wavy quality.