engrossing

To write (a document) in large, aesthetic, and legible lettering; to make a finalized copy of.

To buy up wholesale, especially to buy the whole supply of (a commodity etc.).

To monopolize; to concentrate (something) in the single possession of someone, especially unfairly.

To completely engage the attention of.

“She seems to be completely engrossed in that book.”

To thicken; to condense.

To make gross, thick, or large; to thicken; to increase in bulk or quantity.

To amass.

The act of one who engrosses, or buys up wholesale.

Utterly consuming one's time and attention.

“an engrossing documentary”