spike up
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English
Verb
spike up (third-person singular simple present spikes up, present participle spiking up, simple past and past participle spiked up)
- (transitive) to cause to become spiky
- spike up your hair
- (intransitive) to become spiky
- His hair spiked up
- (intransitive) to increase sharply
- Prices are bound to spike up during high season