to exhaust one's thoughts and energy; to devote oneself entirely to thinking through a problem or project

to push oneself to the absolute limit of one's energy and mental focus; to go all out

to devote one's heart and mind to something; to do one's utmost

to use up; to exhaust; to consume completely

to exhaust all of one's energy and mental resources in deep thought; to push one's thinking to the limit

to use all of one's strength; to exert oneself to the utmost

to exhaust one's wisdom and use up all one's strength; to do everything in one's power

to destroy; to devastate

to exhaust one's thoughts and ingenuity; to think something through thoroughly or leave no stone unturned

(literary) to have seen and heard everything; to be very learned or widely experienced

to faint; to swoon; to lose consciousness

money and strength are both entirely spent

money is depleted and physical strength is exhausted; at the end of one's resources

tired and exhausted