倦み疲れる[umitsukareru] to grow weary
倦厭[kenen] weariness
倦怠[kentai] languor
倦怠感[kentaikan] physical weariness
倦怠期[kentaiki] the stage of fatigue

倦憊[kenpai] extreme fatigue
倦む[agumu] to get tired of (doing)
倦る[akiru] to get tired of
攻め倦む[semeagumu] to lose the attacking initiative
待ち倦む[machiagumu] to tire of waiting

と考えられる[tokangaerareru] one can think that ...
一考[ikkou] consideration
勘考[kankou] consider
考え[kangae] thinking
考えてみれば[kangaetemireba] if you think about it

考える[kangaeru] to consider
考え込む[kangaekomu] to ponder
考え事[kangaegoto] (deep) thinking
考え出す[kangaedasu] to think out
考え直して[kangaenaoshite] On second thoughts ...