the quality of not putting yourself first but being willing to give your time or money or effort etc. for others; "rural people show more devotion and unselfishness than do their urban cousins"
the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle); "he showed great heroism in battle"; "he received a medal for valor"
large or extensive in breadth or importance or comprehensiveness; "the might have repercussions of unimaginable largeness"; "the very extensiveness of his power was a temptation to abuse it"