Lengthy (adjective)

1. Having considerable duration.
2. Having many words or being detailed.
3. Having a large length.

Origin:

From middle english lenge, lengeþi, from old english lengþu, from proto-germanic *lengiþō ("length"), from proto-indo-european *dlonghós ("long").

Examples:

1. The trial was lengthy and lasted for several months.
2. The meeting went on for a lengthy period of time.
3. The document was too lengthy to read in one sitting.
4. He gave a lengthy explanation for his absence.
5. The book was a lengthy but very informative read.