adverb, adverb taking the 'to' particle
Mimetic adverb describing a light, airy, or delicate manner, often with と. Used for gentle touches, faint sensations, or soft textures.
山の端があわあわと明るくなってきた。
The edge of the mountains began to grow faintly bright.
彼女はアワアワと触れた。
She touched it delicately.
Mimetic word; the exact derivation is uncertain, but the reduplicated form あわあわ suggests a light, airy sensation.