Verbs

(v)elaborate, lucubrate, expatiate, exposit, enlarge, flesh out, expand, expound, dilateadd details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing“She elaborated on the main ideas in her dissertation”
(v)elaborateproduce from basic elements or sources; change into a more developed product“The bee elaborates honey”
(v)complicate, refine, rarify, elaboratemake more complex, intricate, or richer“refine a design or pattern”
(v)elaborate, work outwork out in detail“elaborate a plan”

Adjectives

(s)elaborate, luxuriantmarked by complexity and richness of detail“an elaborate lace pattern”
(s)detailed, elaborate, elaborateddeveloped or executed with care and in minute detail“a detailed plan”, “the elaborate register of the inhabitants prevented tax evasion” (John Buchan), “the carefully elaborated theme”