IPA: /ˌædˈmɒnɪtəri/
KK: /ædˈmɒnɪtəri/
Relating to or serving as a warning or reprimand.
The teacher gave an admonitory glance to the students who were talking during the lecture.
Admonitory → It is formed from "ad-" (meaning to) and "monere" (meaning to warn or advise) and the suffix "-ory" (meaning relating to). The word "admonitory" refers to something that is related to giving a warning or advice.
Think of 'to warn' ('monere') someone 'to' ('ad-') do something — that's why admonitory means related to giving a warning.