13-Letter Words Containing: A,V,I,A,T,I,C

• process of treating rubber or rubberlike materials with sulphur at great heat to improve elasticity and strength or to harden them

• the sound made by the vibration of vocal folds modified by the resonance of the vocal tract

• the use of uttered sounds for auditory communication

• the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

• in a radioactive manner

• be deliberately ambiguous or unclear in order to mislead or withhold information

• To vaccinate again