IPA: /ʌnˈfɔːrst/
KK: /ʌnˈfɔrst/
Not done under pressure; occurring naturally without being forced.
Her laughter was unforced and genuine, making everyone feel at ease.
Unforced → It is formed from "un-" (meaning not) and "forced" (from Old French *forcier*, meaning to compel or make happen). The word "unforced" means not compelled or done without pressure.
Think of 'not' ('un-') being applied to something that is 'compelled' ('forced') — that's why unforced means something done freely, without pressure.