Dum bene se gesserit
Defined in 3 dictionaries — Ballentine's (1916), Black's (1891), Burrill (1850)
Ballentine's Law Dictionary
James A. Ballentine · 1916
During good behavior.
A Dictionary of Law
Henry Campbell Black · 1891
While he shall conduct himself well; during good behavior. Expressive of a tenure of office not dependent upon the pleasure of the appointing power, nor for a limited period, but terminable only upon the death or misconduct of the incumbent.
A New Law Dictionary and Glossary
Alexander M. Burrill · 1850
Lat While he conducted himself well; during good behaviour. 2 Bl. Com. 252. The unplied condition on which a feud or fee was originally given. Id. See Quamdm bene se gesserint,