Reedier is an adjective that describes something as having more reeds or resembling the characteristics of reeds. Synonyms for reedier include "grassy," "thatchier," and "rushier." These words all describe objects or areas that are overgrown with vegetation or flora. Another synonym is "stalkier," which describes objects that have more stalks or stems, such as a plant. Additionally, "taller" could also be a synonym since it implies an increased height, which is often associated with reeds. Overall, there are numerous synonyms for reedier that describe the same characteristics and traits of reeds and their associated growth patterns.