From Wiktionary, the free dictionary
Derived from rege (“monarch, king or queen”)
Root: reg-
Morphemes: reg- + -o + -nal
regonal
- kingly
- rege (“monarch”, noun)
- rego (“king”, noun)
- rega (“queen”, noun)
- regia (“kingdom”, noun)
- regira (“reign”, verb)
- regido (“royal prince”, noun)
- regida (“royal princess”, noun)
- viserego (“viceroy”, noun)
- regal (“regal, royal”, adjective)
- reganal (“queenly”, adjective)
