301. Vicissitude, Fluctuation

Vicissitude: Change in circumstances
Fluctuation: Irregular variation

302. Vindictive, Spiteful

Vindictive: Seeking revenge
Spiteful: Showing malice

303. Virulent, Malignant

Virulent: Extremely harmful
Malignant: Dangerous and spreading

304. Visceral, Instinctive

Visceral: Relating to deep emotions
Instinctive: Based on intuition

305. Vitriolic, Bitter

Vitriolic: Filled with harsh criticism

306. Vociferous, Boisterous

Vociferous: Loud and forceful
Boisterous: Noisy and energetic

307. Voluble, Talkative

Voluble: Speaking rapidly
Talkative: Inclined to speak much

308. Wanton, Reckless

Wanton: Without regard for consequences
Reckless: Careless of danger

309. Wistful, Longing

Wistful: Showing yearning
Longing: Deep desire

310. Wry, Ironic

Wry: Dryly humorous
Ironic: Expressing meaning by contrast

311. Zephyr, Breeze

Zephyr: Gentle wind
Breeze: Light wind

312. Abnegation, Renunciation

Abnegation: Self-denial
Renunciation: Giving up something