Answer: flimsy

AnswerCrossword Clue
FLIMSYLike some excuses
FLIMSYWeak, as an excuse
FLIMSYAirmail paper.
FLIMSYInadequate.
FLIMSYThin paper
FLIMSYThin paper for carbons
FLIMSYUnsubstantial
FLIMSYLame
FLIMSYNot believable
FLIMSYVery weak
FLIMSYPoorly made
FLIMSYWeak
FLIMSYCheaply made
flimsya thin paper / lacking strength
flimsyweak or thin