His new book is the result of ten years of sedulous research in the university library.
Latin sedulus (attentive, painstaking, diligent, busy, zealous) (Latin)
The sedulous young woman received promotion not for her seducing looks but for her sedulous work. To seduce a woman, a man needs to be diligent and persistent i.e. hardworking se (SAY) + dulous (dulux). dulux paints adv. SAY dulux dulux dulux. painting a home is a sedulous task