Originally Posted by ariel
...whereas Dagger clearly stems from the Latin group : Dague of Old French or Italian Daga...
Maybe not so linear, if i may, Ariel.
Listen to what scholars think about this term:
- Some dictionaries say that the word "adaga" originates in hypothetical latin term "daca", which means "punhal". However this is once more an hypothetical word, which existence was never verified. Raphael Bluteau refers a possible Germanic origin (daguen) with contamintion to French (daque) towards the Italian (daga). Curiously the origin of the word may be similar to this proposal, only that the signification and the language of origin are other. Our word "adaga" must come from “ødi” [âdi], which means "adornament, embelishment", and “daku” [dake], which means killing, destroy, submit, ou de “dk” [dake], which is noble . Therefore adaga comes from the expression “ødi dk” [âdidake] which will be noble's ornament, or from "addake", which will be killing adornamnent.
 - The form “dâku” is acadian, while the word "dk" is ugaritic. There also exist forms close from the old Hebraic. Possibly all were pronounced in a
close mode and would have similar signification.-