A poorly developed object or idea can often be described as inadequate, unfinished, or primitive. These terms indicate that something is lacking in its development, whether that be in quality, complexity, or sophistication. Other synonyms for poorly developed could include underdeveloped, immature, embryonic, or rudimentary, which all denote a state of beginning stages or a lack of progress. These words can be used to describe a wide range of subjects, from a fledgling company with an underdeveloped marketing strategy, to a garden with immature plants that have not yet bloomed. In any instance, the use of synonyms helps to expand vocabulary and express meaning more accurately.