We don't have synonyms for theed yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are heed, tweed and treed.
(n) :
Acronym of tetrahydroxyethylethylenediamine. [(chemistry) A synthetic derivative of ethylenediamine containing four hydroxyl groups and a C₂H₅ radical used in the preparation of detergents, emulsifiers, resins, plasticizers, toxicants, chelating agents, germicides, de-emulsifiers, and pharmaceuticals.]
(n) :
Acronym of tetrahydroxyethylethylenediamine. [(chemistry) A synthetic derivative of ethylenediamine containing four hydroxyl groups and a C₂H₅ radical used in the preparation of detergents, emulsifiers, resins, plasticizers, toxicants, chelating agents, germicides, de-emulsifiers, and pharmaceuticals.]