Arrange the given words in the sequence in which they occur in the dictionary.
i. Shortage
ii. Shore
iii. Shamelessly
iv. Shadiness
v. Shallow

Let's compare the words alphabetically:
Every word starts with "Sh". Let's look at the 3rd letter:

iv. Shadiness (a)

v. Shallow (a)

iii. Shamelessly (a)

i. Shortage (o)

ii. Shore (o)

Order among "Sha-" words (comparing 4th letters):

iv. Shadiness ('d') comes first.

v. Shallow ('l') comes next.

iii. Shamelessly ('m') comes third.
So the sequence starts: iv, v, iii.

Order among "Sho-" words:

ii. Shore (sho + r + e)

i. Shortage (sho + r + t)
Since 'e' comes before 't', ii comes before i.

Combining all parts, the dictionary order is: iv, v, iii, ii, i.