enough

The story

1. Proto-Indo-European · derived from*h₂eh₂nó(n)ḱe“he has reached, attained”
2. Proto-Germanic · inherited from*ganōgaz“enough”
3. Old English · inherited fromġenōg“enough”
4. Middle English · inherited fromynogh
5. English todayenough

From Middle English ynogh, from Old English ġenōg (“enough”), from Proto-Germanic *ganōgaz (“enough”) (compare Scots eneuch, West Frisian genôch, Dutch genoeg, German genug, Low German (ge)noog, Danish nok, Swedish nog, Icelandic nógur), from *ganuganą 'to suffice' (compare Old English ġeneah), or from *ga- + an unattested *nōgaz, probably ultimately from Proto-Indo-European *h₂eh₂nó(n)ḱe (“he has reached, attained”), perfective of *h₂neḱ- (“to reach”) (compare Old Irish tánaic (“he arrived”), Latin nancisci (“to get”), Albanian kënaq (“to please, satisfy”)).