Where does “honest” come from?

honest (Middle English) comes from Old French honesté, from Latin honestas, from Latin honestus, from Latin honor, from Old Latin honos — Alternative form of honor.

Ancestry of “honest”, step by step

Step	Language	Word	Meaning
1	Old French	honesté	—
2	Latin	honestas	respectability; honor, honour, honorableness;...
3	Latin	honestus	Full of or regarded with honor/honour;...
4	Latin	honor	honor, esteem, dignity, reputation, office
5	Old Latin	honos	Alternative form of honor

Words derived from “honest”

honest
honester
underhonest
onest

Every word from Old Latin honos →

honest — Etymology, Origin & Word History | Etymology Explorer