SPIKIER
SPIKY
peaky, spiky
(adjective) having or as if having especially high-pitched spots; “absence of peaky highs and beefed-up bass”
Source: WordNet® 3.1
Adjective
spikier
comparative form of spiky
Source: Wiktionary
SPIKY
Spik"y, a.
1. Like a spike; spikelike.
These spiky, vivid outbursts of metallic vapors. C. A. Young.
2. Having a sharp point, or sharp points; furnished or armed with
spikes.
Or by the spiky harrow cleared away. Dyer.
The spiky wheels through heaps of carnage tore. Pope.
Source: Webster’s Unabridged Dictionary 1913 Edition