Quicken
WordNet
verb
(1) Give new life or energy to
"A hot soup will revive me"
"This will renovate my spirits"
"This treatment repaired my health"
(2) Show signs of life
"The fetus quickened"
(3) Move faster
"The car accelerated"
(4) Give life or energy to
"The cold water invigorated him"
(5) Make keen or more acute
"Whet my appetite"