The president suffered a 12-point swing to Romney, sapping his 9-point advantage.
Accusations of dishonor demonize and demoralize, making it difficult to compromise, and sapping the motivation to act nobly.
If I may say so, you need to get past this issue that is sapping your energy and demoralizing your followers.
Titus knew that famine was sapping the strength of the defenders, and that every day weakened their power of resistance.
It was beginning to feel that its strength was sapping away.
Voltaire's policy of sapping the dogmas by which all tyranny was supported had been carried out unflinchingly.
Slowly but surely this practice is sapping the vitality of the race.
Lack of sleep and lack of food supplies were sapping his lanky body of the whiplash swiftness and wiry strength it once possessed.
All this was wearing out his strength, and sapping his very life.
They go on sapping and sapping the independence of the people.
"liquid in a plant," Old English sæpm from Proto-Germanic *sapam (cf. Middle Low German, Middle Dutch, Dutch sap, Old High German saf, German Saft "juice"), from PIE *sab- "juice, fluid" (cf. Latin sapere "to taste"), from root *sab- "juice, fluid" (cf. Sanskrit sabar- "sap, milk, nectar," Irish sug, Russian soku "sap," Lithuanian sakas "tree-gum"). As a verb meaning "To drain the sap from," 1725.
"simpleton," 1815, originally especially in Scottish and English schoolboy slang, probably from earlier sapskull (1735), saphead (1798), from sap as a shortened form of sapwood "soft wood between the inner bark and the heartwood" (late 14c.), from sap (n.1) + wood (n.); so called because it conducts the sap; cf. sappy.
"dig a trench toward the enemy's position," 1590s, from Middle French saper, from sappe "spade," from Late Latin sappa "spade" (cf. Italian zappa, Spanish zapa "spade"). Extended sense "weaken or destroy insidiously" is from 1755, probably influenced by the verb form of sap (n.1), on the notion of "draining the vital sap from." Related: Sapped; sapping.
"hit with a sap," 1926, from sap (n.3). Related: Sapped; sapping.
A stupid person; fool, esp a gullible one: Quit acting like a sap
[1815+; fr British dialect, short for sapskull, ''person with a head full of soft material''; probably influenced by early 1800s British schoolboy slang, ''compulsive studier, grind,'' which is probably fr sap as an ironic abbreviation of Latin sapiens, ''wise,'' and is hence semantically akin to sophomore]
A blackjack; bludgeon: The sap, a nice little tool about five inches long, covered with woven brown leather (1899+)
: One of the others sapped him from behind with the blackjack (1926+)
[perhaps fr Middle English sappe,''shovel,''theshovelbeingforagesapopularclub]