Did You Know?
"Scrupulous" and its close relative "scruple" ("an ethical consideration") come from the Latin noun "scrupulus," the diminutive of "scrupus." "Scrupus" refers to a sharp stone, so "scrupulus" means "small sharp stone." "Scrupus" retained its literal meaning but eventually also came to be used with the metaphorical meaning "a source of anxiety or uneasiness," the way a sharp pebble in one's shoe would be a source of pain. When the adjective "scrupulous" entered the language in the 15th century, it meant "principled." Now it also commonly means "painstaking" or "careful."