\definefontfeature
  [default]
  [mode=node,script=latn,language=dflt,liga=yes]

\switchtobodyfont[modern,11pt]

\hyphenation{verf-if-iceren}

\starttext
    \startTEXpage[align=normal]
        \hbox{verfificeren}
        \setbox0=\hbox{verfificeren}
        \hsize1mm\par
        \unhbox0\par
    \stopTEXpage
\stoptext
