using (or as if using) mechanisms or tools or devices; "a mechanical process"; "his smile was very mechanical"; "a mechanical toy"
relating to or governed by or in accordance with mechanics; "a belief that the universe is a mechanical contrivance"; "the mechanical pressure of a strong wind"
relating to or concerned with machinery or tools; "mechanical arts"; "mechanical design"; "mechanical skills"
not capable of being conquered or vanquished or overcome; "a tribute to his courage...and his unconquerable will"- R.E.Danielson; "faced unconquerable difficulties"
showing sustained enthusiastic action with unflagging vitality; "an indefatigable advocate of equal rights"; "a tireless worker"; "unflagging pursuit of excellence"
people who are old collectively; "special arrangements were available for the aged"
(used of tobacco) aging as a preservative process (`aged' is pronounced as one syllable)
of wines, fruit, cheeses; having reached a desired or final condition; (`aged' pronounced as one syllable); "mature well-aged cheeses"
advanced in years; (`aged' is pronounced as two syllables); "aged members of the society"; "elderly residents could remember the construction of the first skyscraper"; "senior citizen"
at an advanced stage of erosion (pronounced as one syllable); "aged rocks"
existing for a long time; "hopes for a durable peace"; "a long-lasting friendship"
very long lasting; "less durable rocks were gradually worn away to form valleys"; "the perdurable granite of the ancient Appalachian spine of the continent"
serviceable for a long time; "durable denim jeans"
(often followed by `to') devoted exclusively to a single use or purpose or person; "a fund sacred to charity"; "a morning hour sacred to study"; "a private office sacred to the President"
concerned with religion or religious purposes; "sacred texts"; "sacred rites"; "sacred music"
worthy of respect or dedication; "saw motherhood as woman's sacred calling"