[1535–45; wail + -ful]This word is first recorded in the period 1535–45. Other words that entered Englishat around the same time include: agglutination, alcohol, basilica, diagonal, troop-ful is a suffix meaning “full of,” “characterized by” (shameful; beautiful; careful; thoughtful); “tending to,” “able to” (wakeful; harmful); or “as much as will fill” (spoonful)