IPA: /ɪnˈdɔːrsmənt/
KK: /ɪnˈdɔrsmənt/
A formal approval or support for something, often in a public way.
The celebrity's indorsement of the product helped boost its sales significantly.
Indorsement → It is formed from "in-" (meaning in or on) and "dorsum" (from Latin, meaning back). The word originally referred to writing on the back of a document, thus indicating approval or support.
Think of writing 'on the back' ('dorsum') of something to show your support or approval — that's what indorsement means.