IPA: /nɒnˈvɜːbəl/
KK: /nɑnˈvɜrbl/
Relating to communication or expression that does not use words, such as gestures, facial expressions, or body language.
Nonverbal cues can often convey more meaning than spoken words.
Nonverbal → It is formed from "non-" (meaning not) and "verbal" (from Latin "verbum", meaning word). The word "nonverbal" refers to communication that does not involve words.
Think of 'not' ('non-') using 'words' ('verbum') — that's why nonverbal means communication without words.