'avowedness' originates from English, specifically formed from the adjective 'avowed' and the noun-forming suffix '-ness'.

'avowed' changed from Middle English past-participle forms (from the verb 'avow'), which in turn came from Old French 'avouer' meaning 'to confess' or 'to acknowledge'.

Initially it meant 'the state of having been openly declared or confessed,' and over time it has continued to mean 'the quality of being openly acknowledged' in modern usage.