Decrease and Stumble

decrease

A change downward.
- usage: "there was a decrease in his temperature as the fever subsided"; "there was a sharp drop-off in sales"
- synonyms: lessening, drop-off
A process of becoming smaller or shorter.
- synonyms: decrement
The amount by which something decreases.
- synonyms: decrement
The act of decreasing or reducing something.
- synonyms: diminution, reduction, step-down

Decrease in size, extent, or range.
- usage: "The amount of homework decreased towards the end of the semester"; "The cabin pressure fell dramatically"; "her weight fell to under a hundred pounds"; "his voice fell to a whisper"
- synonyms: diminish, lessen, fall
Make smaller.
- usage: "He decreased his staff"
- synonyms: lessen, minify

(v.t.) To cause to grow less; to diminish gradually; as, extravagance decreases one's means.
(v.) A becoming less; gradual diminution; decay; as, a decrease of revenue or of strength.
(n.) To grow less, -- opposed to increase; to be diminished gradually, in size, degree, number, duration, etc. or in strength, quality or excellence; as, they days decrease in length from June to December.
(v.) The wane of the moon.

Webster's Revised Unabridged Dictionary

stumble

An unsteady uneven gait.
- synonyms: lurch, stagger
An unintentional but embarrassing blunder.
- usage: "he recited the whole poem without a single trip"; "he arranged his robes to avoid a trip-up later"; "confusion caused his unfortunate misstep"
- synonyms: trip, trip-up, misstep

Walk unsteadily.
- usage: "The drunk man stumbled about"
- synonyms: falter, bumble
Miss a step and fall or nearly fall.
- usage: "She stumbled over the tree root"
- synonyms: trip
Encounter by chance.
- usage: "I stumbled across a long-lost cousin last night in a restaurant"
- synonyms: hit
Make an error.
- usage: "She slipped up and revealed the name"
- synonyms: slip up, trip up

(v.i.) To trip in walking or in moving in any way with the legs; to strike the foot so as to fall or to endanger a fall; to stagger because of a false step.
(n.) A trip in walking or running.
(n.) A blunder; a failure; a fall from rectitude.
(v.t.) Fig.: To mislead; to confound; to perplex; to cause to err or to fall.
(v.i.) To strike or happen (upon a person or thing) without design; to fall or light by chance; -- with on, upon or against.
(v.t.) To cause to stumble or trip.
(v.i.) To walk in an unsteady or clumsy manner.
(v.i.) To fall into a crime or an error; to err.

Webster's Revised Unabridged Dictionary