Definition of one's level best
- He tried his level best to win the race.
- She did her level best to please her mother.
: a device for establishing a horizontal line or plane by means of a bubble in a liquid that shows adjustment to the horizontal by movement to the center of a slightly bowed glass tube
: a measurement of the difference of altitude of two points by means of a level
: horizontal condition
: to make (a line or surface) horizontal : make flat or level
: to bring to a horizontal aiming position
: aim, direct
: having no part higher than another : conforming to the curvature of the liquid parts of the earth's surface
: parallel with the plane of the horizon : horizontal
: even or unvarying in height
: superlative of good
: excelling all others
: most productive of good : offering or producing the greatest advantage, utility, or satisfaction
: superlative of well
: in the best (see 1best) way : to greatest advantage
: the best (see 1best) state or part
: one that is best
: the greatest degree of good or excellence
: to get the better of : outdo
: had best (see 2best 1)
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