1) Enduring 2) Existing for a long time 3) Far from fragile 4) French word used in English 5) Good in rough weather 6) Hard-wearing 7) Heavy-duty 8) Indestructible 9) Lasting 10) Like denim 11) Long 12) Long-lasting 13) Long-lived 14) Resilient 15) Resistant to wear and tear 16) Strong 17) Sturdy 18) Tough Found on https://www.crosswordclues.com/clue/durable
• (a.) Able to endure or continue in a particular condition; lasting; not perishable or changeable; not wearing out or decaying soon; enduring; as, durable cloth; durable happiness. Found on http://thinkexist.com/dictionary/meaning/durable/
Du'ra·ble adjective [ Latin durabilis , from durare to last: confer French durable . See Dure .] Able to endure or continue in a particular condition; lasting; not perishable or changeable; not wearing out or decaying soon; enduring; as, durable cloth; durable Found on http://www.encyclo.co.uk/webster/D/132
indestructibleadjective very long lasting; `less durable rocks were gradually worn away to form valleys`; `the perdurable granite of the ancient Appalachian spine of the continent` Found on https://www.encyclo.co.uk/local/20974