Liable
Part of speech: adjective
Definition: Bound or obliged in law or equity; responsible; answerable; as, the surety is liable for the debt of his principal. Exposed to a certain contingency or casualty, more or less probable; -- with to and an infinitive or noun; as, liable to slip; liable to accident.
Example sentence: In experimental philosophy, we are to look upon propositions inferred by general induction from phenomena as accurately or very nearly true, notwithstanding any contrary hypotheses that may be imagined, till such time as other phenomena occur by which they may either be made more accurate or liable to exceptions.
Responsible
Part of speech: adjective
Definition: Answerable for an act performed or for its consequences; accountable; amenable, especially legally or politically.Capable of responding to any reasonable claim; able to answer reasonably for one's conduct and obligations; capable of rational conduct.Involving responsibility; involving a degree of personal accountability on the part of the person concerned.Being a primary cause or agent of some event or action; capable of being credited for something, or of being held liable for something.Able to be trusted; reliable; trustworthy.
Example sentence: Nothing is more responsible for the good old days than a bad memory.