(of) a statement expressing 'Yes', agreement etc or one that is true, real etc as in 'The answer is (in the) affirmative

being agreeable or assenting

(of a person) willing to be guided or controlled

willing, cooperative

quiet; easily trained or controlled

compliant, submissive

gentle and patient

shy; compliant

not able to oppose the effect of a disease, chemical etc

lifeless, inactive

doing, willing to do, what one is told to do; behaving well

well-behaved; submissive

showing no enthusiasm, interest etc; not willing to fight when attacked or opposed

lifeless, inactive

allowing (too) much personal freedom

lenient

having or showing acceptance (of something unpleasant)

enduring, passive

giving in to the control or authority of another

compliant

giving too much power or respect (to a senior person)

extremely compliant

easily controlled or guided

manageable