Hi, Following the instruction from : https://wiki.contextgarden.net/Use_the_fonts_you_want mtxrun --script font --list --file -pattern=*casual* gives : familyname weight style width variant fontname filename subfont fontweight lucidacasual normal normal normal normal lucidacasual /home/xxxx/.fonts/LucidaCasual.ttf Then the following code should work : \starttypescript [myserif] \definefontsynonym[LucidaCasual-Regular] [file:LucidaCasual.ttf] \stoptypescript \starttypescript [myserif] \setups[font:fallback:serif] \definefontsynonym[Serif] [LucidaCasual-Regular] [features=default] \stoptypescript \starttypescript [myserif] \definetypeface [myserif] [rm] [serif] [myserif] [default] \stoptypescript \setupbodyfont[12pt] \starttext The quick brown fox jumps over the lazy dog \setupbodyfont[myserif] The quick brown fox jumps over the lazy dog \stoptext