Definition of indispensableness in English:

indispensableness

Pronunciation /ˌindəˈspensəb(ə)lnəs/ /ˌɪndəˈspɛnsəb(ə)lnəs/

noun

See indispensable

‘Her work has none of the emotional intensity with which partisans of certain colonies or races demonstrate their indispensableness to the patriot cause.’
‘Having said all that, Sue’s being uncharacteristically nice to me, but I’m putting that down to my temporary indispensableness (it is a real word, honestly.)’

Pronunciation

indispensableness

/ˌindəˈspensəb(ə)lnəs/ /ˌɪndəˈspɛnsəb(ə)lnəs/