Definition of overtax
1 : to tax (someone or something) too heavily or beyond what is due revenues raised through overtaxing the middle class
2 : to lay too heavy a burden or demand upon (someone or something) exercises that overtax the muscles overtaxing my patience A fancy terminal with enough gates for all the planes, a work force that is alternately overtaxed and underemployed, and a high-tech baggage system all create high fixed costs. —Marc Levinson et al.
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