Nasality n. : The quality or state of being nasal.

Example:
I have strong Nasality. Help!!?

Taxonomy
nasality, speech, vowels, consonants, velopharyngeal closure, emission, vocal tract, hypernasality, free encyclopedia, speech pathologists, nasal airflow, acoustic energy, separation, passageway, cleft palate, speech training, the normal, air pressure.

Defination from the web:
nasality is referred to as nasalization and is a linguistic category that can apply to vowels or consonants in a specific language. The primary underlying physical variable determining the degree of nasality in normal speech is the opening and closing of a 'velopharyngeal' ...