Synonyms of the word 
VAPIDNESS → DULLNESS - JEJUNENESS - JEJUNITY - TAMENESS - VAPIDITY
vapidness
- n. The state or quality of being vapid; vapidity.
dullness
- n. The quality of being slow to understand things.
- n. The quality of being uninteresting.
- n. The lack of visual brilliance.
- n. (of an edge) bluntness.
jejuneness
- n. The state or condition of being jejune.
jejunity
- n. Jejuneness.
tameness
- n. (uncountable) The state or quality of being tame.
- n. (countable, rare) The result or product of being tame.
vapidity
- n. The state or quality of being vapid; vapidness.
If you are interested in words, visit the following sites :
- wiktionary.org/vapidness For complete definition of a word
- 1word.ws/vapidness to play with words, suffixs, prefixs, etc.