Letters in ascending order according to dictionary are ADIIN

Total number of words starts with letter A = 4!/2! = 12

Total number of words starts with letter D = 4!/2! = 12

Total number of words starts with letter I = 4! = 24

\(\therefore\) 48^{th} word = INIDA

47^{th} word = INIAD

46^{th} word = INDIA

**Alternative:-**

Total number of words start with letter A = 4!/2! = 12

Total number of words start with letter D = 4!/2! = 12

Total number of words start with letter IA = 3! = 6

Total number of words start with letter ID =3! = 6

Total number of words start with letter II =3! = 6

Total number of words start with letter INA =2! = 2

\(\therefore\) 44^{th} word is INAID

45^{th }word is INDAI

46^{th} word is INDIA