12-Letter Words Containing: I,B,T,A,R,D,_

• involving the fourth and no higher power of a quantity or degree

• an algebraic equation or function of the fourth degree

• an equation of the fourth degree

• a polynomial of the fourth degree

• change something so that its value declines; for example, art forms

• declare a child to be illegitimate

• cause members of a tribe to lose their cultural identity

• equally skillful with each hand

• marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another

• bring to a chemical stasis or equilibrium

• bring into balance or equilibrium

• cause members of a tribe to lose their cultural identity

• watch and study birds in their natural habitat