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Webster 1913 Edition

(rĕj′ĭ-b’l)

Adj.

[L.

regibilis

, from

regere

to rule.]

Governable; tractable.

[Obs.]

Adj.

Governable. [Not in use.]

regible ‎(not comparable)

(rare) That may be ruled; governable, tractable.
- 1930, William Douglas Simpson, Julian: The Apostate, pages 50–51:
  If occasion require, the same [forwardness of manhood and boldness] ought to be regible, advised, and considerate.

governable, tractable