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Webster 1913 Edition

Noun.

[See

Inertness; inertia.

[R.]

Good.

Noun.

The state of being inert, or a tendency to remain quiescent till impelled by external force to move.

inertitude ‎(uncountable)

(dated) inertness; inertia
- 1842, Charles Terry, New Zealand, its advantages and prospects, as a British colony
  I know it was a dangerous experiment to send military amongst them in the night time, but it is equally necessary to be firm and courteous and forbearing, and if my information had been true, inertitude would have been criminal.
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