All 3 Uses

forbearance
in
Gone with the Wind
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She had the easily stirred passions of her Irish father and nothing except the thinnest veneer of her mother's unselfish and forbearing nature.†
Chpt 1.3 *

forbearing = refraining (holding back) from acting
She forbore to say anything as she looked at the two sheets but Ashley read her face.†
Chpt 5.51

forbore = refrained (held back) from acting
This worked great hardship and strained the tact and forbearance of the unrelated half of the town, for the India-Melanie feud made a rupture in practically every social organization.†
Chpt 5.55

forbearance = refraining (holding back) from acting OR patience, tolerance, or self-control

Definitions:

(1) (forbearance)
patient tolerance or self-control; or holding back from taking action or enforcing a right

Today, the word, forbearance, is most commonly seen in the field of law to indicate that a legal right, claim or privilege is not being enforced.
(2) (meaning too rare to warrant focus)
The form, forbears is typically a verb, but can be an alternate spelling of the noun forebears; i.e., ancestors. Note that these words put the emphasis on different syllables: for-BEARS v. FORE-bears