1. 理论上的：theorematic 定理的 | theoretic 理论上的 | theoretically speaking 理论上说

2. 空谈的：theorematic 定理的 | theoretic 空谈的 | theoretic 理论上的

3. 理论上的/空谈的：theorematic /定理的/ | theoretic /理论上的/空谈的/ | theoretical /理论的/

4. 理论学科：决策论:decision-theoretic | 理论学科:theoretic | 博奕论:Game theoretic

1. concerned primarily with theories or hypotheses rather than practical considerations

    e.g. theoretical science

    Synonym: theoretical