willing to acquiesce, accept or agree to something without objection, protest or resistance
resting satisfied or submissive; disposed tacitly to submit
Capable of being easily led, taught, or managed.
Easy to deal with or manage
Capable of being shaped; malleable.
Sufficiently operationalizable or useful to allow a mathematical calculation to proceed toward a solution.
Algorithmically solvable fast enough to be practically relevant, typically in polynomial time.