IPA: /ʌnˈdʒæm/
KK: /ʌnˈdʒæm/
To remove something that is stuck or blocked, allowing it to move freely again.
I had to unjam the printer because it was stuck with paper.
Past: unjammed
Past Participle: unjammed
Unjam → It is formed from "un-" (meaning not or opposite of) and "jam" (from Old English "gemmian", meaning to press or squeeze). The word "unjam" means to remove a jam or to free something that is stuck or pressed together.
Think of 'not' or 'opposite' ('un-') of something being 'pressed' or 'squeezed' ('jam'). This helps you remember that 'unjam' means to free something that is stuck.