1.Definition: (used pejoratively) out of fashion; old fashioned

Related Adjective(s):fogyish, mossy

2.Definition: excessively conventional and unimaginative and hence dull

"Why is the middle class so stodgy, so utterly without a sense of humor?", "A stodgy dinner party"

Related Adjective(s):stuffy

3.Definition: heavy and starchy and hard to digest

"Stodgy food", "A stodgy pudding served up when everyone was already full"