spike up

spike up

1. To become raised and pointed in appearance. Notice how the metal filings spike up when the magnetized coil is passed over them. If you rub a balloon against your shirt and hold it above your head, it makes your hair spike up!
2. To cause something to become raised and pointed in appearance. In this usage, a noun or pronoun can be used between "spike" and "up." I don't know why you spike your hair up with gel like that. You look ridiculous!
3. To rise or increase very sharply or suddenly. The rumors have caused the company's stock prices to spike up over the last week. Running up the stairs like that really made my heart rate spike up.
4. To cause something to rise or increase very sharply or suddenly. In this usage, a noun or pronoun can be used between "spike" and "up." Those suffering from diabetes must always be conscious of foods that might spike up their blood glucose levels. Sprints are a good way to spike your heart rate up.
5. To cause someone to become full of energy, adrenaline, enthusiasm, etc. Whenever my energy levels start feeling low, I find that doing a bunch of push ups helps spike me up. The story was really inspirational, and it spiked me up to go out in the world and do something meaningful with my life.
See also: spike, up
Farlex Dictionary of Idioms.
See also:
  • rub up
  • wind into
  • wind into (something)
  • the rub of the green
  • rub of the green
  • coil
  • coil around
  • coil around (someone or something)
  • rub the wrong way, to
  • rub (oneself) off