Meaning

• To cause to fail; to frustrate, to prevent.

  "Our plans for a picnic were thwarted by the thunderstorm."

• To place (something) across (another thing); to position crosswise.

• To hinder or obstruct by placing (something) in the way of; to block, to impede, to oppose.

• To move (something) across or counter to; to cross.

  "An arrow thwarts the air."