Most antifreeze solutions contain high levels of ethylene glycol, an ingredient that, once metabolized, is extremely toxic to dogs and cats. Pets are often attracted to the liquid because of its sweet taste. Even small amounts can be lethal to animals.
Wiktionary(0.00 / 0 votes)Rate this definition: arduous(Adjective) Needing or using up much energy; testing powers of endurance. The movement towards a peaceful settlement has been a long and arduous political struggle.
tortuous / torturous Don't torture yourself trying to remember the difference between tortuous and torturous. Tortuous describes something like the long and winding road. But torturous is what a room full of masochists might say: Torture us! It describes something painful, like a poke in the eye with a sharp stick. Tortuous, pronounced TOR-choo-us, describes something that has many twists and turns, like a zigzagging road or the plot of a soap opera.