1) Astute 2) Clever 3) Exclusively Anglo word 4) Exclusively Saxon word 5) Perceptive 6) Sagacious 7) Sensitive 8) Sharp 9) Smart 10) Thorough 11) Wise 12) Word of purely Anglo origin 13) Word with Anglo-Saxon origins Found on https://www.crosswordclues.com/clue/insightful
adjective exhibiting insight or clear and deep perception; `an insightful parent`; `the chapter is insightful and suggestive of new perspectives`-R.C.Angell Found on https://www.encyclo.co.uk/local/20974