taxing

verb

1. (form-of, gerund, participle, present)present participle and gerund of tax

adj

1. With respect to an experience: exhausting; draining.
2. Burdensome, difficult, exacting.

   “a taxing problem”

noun

1. (countable, uncountable)The act of imposing a tax.

   “January 1834, Horace Binney, Speech on the Question of the Removal of the Deposites Subscriptions, borrowings of money, taxings of the citizens and their property, may all be valid, as operations by virtue of laws for the government of the City […]”