conclusion

The story

1. Proto-Indo-European · derived from*kleh₂u-“key, hook, nail”
2. Latin · derived fromconclūsiō
3. Old French · derived fromconclusion
4. English todayconclusion

From Middle English, borrowed from Old French conclusion, from Latin conclūsiō, from the past participle stem of conclūdere (“to conclude”), from con- + claudō, ultimately from Proto-Indo-European *kleh₂u- (“key, hook, nail”). By surface analysis, conclude + -sion.

Words from the same roots