This approach works well for me, no modules required: (this is NOT a complete working example!) ... \setupbodyfont[mainface,12pt] ... \definefont[alt][fontname sa 1.0] \starttext Blah blah blah Blah blah {\alt boo hoo hoo} Blah blah blah \stoptext The "sa 1.0"is optional but if you want to adjust the alternate font so the x heights match you'll need it. "fontname" comes from running mtxrun --script fonts --list --all --pattern=fontname I use this approach extensively and never had a hiccup but, as always, your mileage may vary. -----Original Message----- I want to adjust my document to have Lucida as main typeface, but with brief passages (a few words at most) in a typeface that has the IPA glyphs like Gentium.