The term 'FORTY' can be represented in a variety of ways in crossword puzzles. The five solutions are NINER (5 letters), WINKS (5 letters), NIER (4 letters), NINERS (6 letters), TWOSCORE (8 letters), and WHENLIFEGINS (12 letters). NINER is a reference to the number 9, which when multiplied by 4 equals 40, the number represented by FORTY. WINKS is a reference to the phrase 'wink and a nod, ' which is a way of saying something without actually saying it, and is often used to refer to the number 40. NIER is a reference to the Roman numeral XL, which stands for 40. NINERS is a reference to the number 9 again, as 4 nines equal 40. TWOSCORE is a reference to the phrase 'two score, ' which is an old-fashioned way of saying 40. Finally, WHENLIFEGINS is a reference to the Bible verse Psalm 90:10, which reads 'The days of our years are threescore years and ten; and if by reason of strength they be fourscore years, yet is their strength labour and sorrow; for it is soon cut off, and we fly away.' This verse is often interpreted to mean that the average human lifespan is 70 years, or fourscore years.