// get tcl, tk before install wordnet sudo apt-get install tcl8.4-dev tk8.4-dev // in the WordNet-3.0 folder (Where your download and extract the package) // depends on where the above commend install tcl, tk ./configure --with-tk=/usr/share/tcltk/tk8.4 --with-tcl=/usr/share/tcltk/tcl8.4 make sudo make install // Now, wordnet will be in "/usr/local/WordNet-3.0"