timeless

Time is money. "Time is the great physician." "Time is a dressmaker specializing in alterations." Everyone seems to know what time is, but what does it mean to be "timeless"—that is, "without time"? Until around the turn of the 20th century, timeless was sometimes used to mean "untimely" or "premature," as in "he met his timeless end." That usage, which dates back to the late 16th century, is now considered archaic, but an equally venerable sense, "eternal" or "having no beginning or end," has proven more enduring. The two remaining senses are somewhat newer. The "not restricted to a particular time or date" meaning dates to the mid-18th century, while the most modern meaning—"ageless"—didn't exist until just before the turn of the 20th century. (By the way, the quotations we started with came from Benjamin Franklin, British statesman Benjamin Disraeli, and American writer Faith Baldwin, respectively.)