Definitions
1.AdjectiveSituated under one's foot or feet.
2.AdjectiveIn the way; placed so as to obstruct or hinder.
3.AdjectiveDowntrodden; abject.
4.AdverbUnder one's foot or feet."The workers were all big, burly, hard-hearted men, tromping through the marsh in their heavy boots without sparing so much as a single thought for the masses of tiny frogs they crushed underfoot."
5.AdverbIn the way; situated so as to obstruct or hinder."It would be easier to do a big project like that someday when we don't have a bunch of newcomers underfoot."
6.NounA storage compartment that sits below the deck of a boat.
7.VerbTo provide a footing beneath; to shore up or underpin.
8.VerbTo assign a column summary that is less than the sum of all the entries in that column.