|Hellenic||Greek lukos 'wolf'|
|Italic||Latin lupus 'wolf', vulpés, volpés 'fox'|
|Indic||Sanskrit vr.ka- 'wolf'|
|Iranian||Avestan v@hrkó 'wolf'|
|Anatolian||Hittite ulippana- 'wolf'|
|Balkan||Albanian ul'k 'wolf'|
|Germanic||Common Germanic *wulfaz 'wolf', *wulgí
Gothic wulfs 'wolf', Old Norse ulfr 'wolf', ylgr 'she-wolf', Old English & Old Saxon wulf, Old High German wolf, Middle High German wülpe 'she-wolf'
|Baltic||Lithuanian vilkas 'wolf', vilpiis 'wild cat', Latvian vilks 'wolf', Sudovian vilkas, Old Prussian wilkis|
|Slavic||Common Slavic *vïlkü 'wolf' >
Russian volk, Ukrainian vovk, Bulgarian v@lk, Serbo-Croatian vuk, Slovene vlk, Polish wilk, Sorbian wjelk 'wolf'
|Notes:||Though with different stem elements, the root is still
considered to be the same for all IE languages. Its two varieties, with *-kw-
and with *-p-, originally had different tints of meaning; it seems that the
latter meant 'she-wolf' in Proto-Indo-European.
As every other common Indo-European term denoting wild animals, this one confirms that the Indo-European homeland was situated in a region where wolfs could be found.