Bound in law or equity; responsible; answerable: as, the surety is liable for the debt of his principal.Having an aptitude or tendency; subject; exposed, as to the doing or occurring of something evil, injurious, or erroneous: as, we are constantly liable to accidents; your plans are liable to defeat.Subordinate; subject.Fit; suitable.Synonyms Incident, Subject, Likely, etc. (see incident); Apt, likely, etc. (see apt).