'annotativeness' ultimately originates from Latin, specifically the verb 'annotāre,' where 'ad-' (often assimilated to 'an-') meant 'to' or 'toward' and 'nota' meant 'a mark' or 'note'.

'annotāre' passed into Medieval Latin and Old French (as forms meaning 'to note' or 'to annotate'), then into Middle English as 'annotaten'/'annotate' and developed into the adjective 'annotative' (via the suffix '-ive') and the noun formed with '-ness' to yield 'annotativeness'.

Initially related to the action 'to make a note of' or 'to add notes', it evolved into a noun describing the quality or state of providing such notes—i.e., the 'quality of adding annotations.'