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1.
Ultimate satisfaction or accordance in reference to an action or statement.
girlfriend: "I have decided to get a breast enlargement and take a vow of silence"

guy: "That's extensive"
by G-Vak December 10, 2004
 
2.
The quality of tape measure that makes it fun to play with, especially metallic tape measure.
Stew's extensive new tape measure kept him up all night, seeing how far he could extend the line before it went limp.
by Nonbasst July 10, 2008