IPA: /ʌnˈæŋkər/
KK: /ʌnˈæŋkər/
To release or lift an anchor from a vessel, allowing it to move freely.
The captain decided to unanchor the ship to continue its journey.
Past: unanchored
Past Participle: unanchored
Unanchor → It is formed from "un-" (meaning not or opposite of) and "anchor" (from Old English "ancor", meaning a device for securing a vessel). The word "unanchor" means to release or remove the anchor, thus not securing something.
Think of 'not securing' something ('un-') by removing the 'anchor' — that's what unanchor means.