-enda

Borrowed from Ido -enda, which was lifted from a secondary meaning of the Latin future passive participle.

• IPA^(key): /ˈenda/
• Rhymes: -enda
• Hyphenation: en‧da

-enda

1. required to be

   ‎pagi (“pay”) + ‎-enda → ‎pagenda (“payable, required to be paid”)

The PMEG describes this sufffix as being similar to a passive participle of the imperative mood.^[1]

Secondary meaning of the Latin future passive participle in -ndus, -nda, -ndum, e.g. Carthago delenda est, "Carthage must be destroyed." See English agenda, tacenda, etc.

-enda

1. suffix added to a verbal root to indicate what should be, or needs to be, done

• IPA^(key): /en.dɑ/

-enda

1. genitive plural of -ende