Lilliputian is an adjective describing something or someone as being similar to the people of the island of Lilliput. Lilliput is a fictional island in Jonathan Swift’s novel Gulliver’s Travels. Lilliputians were extremely small compared to Gulliver. So if something is Lilliputian then it is small.
Even though the dictionary lists the term with a capital, it also acknowledges that the term is often not capitalized when it is not directly referencing the people of Lilliput. In the examples we found, it was capitalized, however, it may become more mainstream in years to come to leave the l lowercase.
Sometimes Lilliputian is used to describe something as petty or small-minded.
Also, one may see Lilliputian-sized or Lilliputian-like but both are slightly redundant and unnecessary.