'tentatively-gathered' originates from the words 'tentative' and 'gathered'. 'Tentative' comes from Latin 'tentativus', meaning 'trying' or 'attempting', and 'gathered' is derived from Old English 'gadrian', meaning 'to bring together'.

'tentative' evolved from the Latin 'tentativus' through Old French 'tentatif', and 'gathered' evolved from Old English 'gadrian'.

Initially, 'tentative' meant 'trying' or 'attempting', and 'gathered' meant 'to bring together'. The combined form 'tentatively-gathered' implies a collection that is not final or certain.