1) Conjecture 2) Develop 3) Explicate 4) Hypothecate 5) Hypothesise 6) Hypothesize 7) Speculate 8) Suppose 9) Theorise 10) Theorize 11) To express in precise form 1) Create 2) Devise 3) Dogmatise 4) Dogmatize 5) Excogitate 6) Express 7) Formularise 8) Formularize 9) Formulize 10) Frame 11) Invent 12) Lexicalise 13) Lexicalize 14) Make 15) Plan 16) Reformulate 
• (v. t.) To reduce to, or express in, a formula; to put in a clear and definite form of statement or expression.
to put together the details of a plan
For'mu·late transitive verb [ imperfect & past participle Formulated ; present participle & verbal noun Formulating .] To reduce to, or express in, a formula; to put in a clear and definite form of statement or expression. G. P. Marsh....
[v] - prepare according to a formula, of chemicals 2. [v] - put into words or an expression
verb elaborate, as of theories and hypotheses; `Could you develop the ideas in your thesis`
to express in precise form; state definitely or systematically: He finds it extremely difficult to formulate his new theory. · to devise or develop, as a method, system, etc. · to reduce to or express in a formula.
come up with after a mental effort[SBAC wordlist] come up with after a mental effort