Take the following as truth: One cannot but admire a standard dictionary that defines middle-aged as  between youth and old age, variously reckoned to suit the reckoner  and says that the verb perpetrate means  to execute or commit (esp.an offence, a poem, or a pun). 
Then the following statement: "Perpetrate is a commonly used word in the English language." is true, false, or inconclusive?
Answer: False