1) Constant 2) Continual 3) Continuing without change 4) Enduring 5) Exclusively Saxon word 6) Exclusively Anglo word 7) Imperishable 8) Lasting 9) Permanent 10) Persistent 11) Putting up with 12) Standing for 13) Steadfast 14) Unceasing 15) Word with Anglo-Saxon origins 16) Word of purely Anglo origin Found on https://www.crosswordclues.com/clue/abiding