Wiktionary
vb. 1 (context intransitive English) To release the shift key on a computer or typewriter keyboard. 2 (context transitive computing English) To add an item to the beginning of an array.
Usage examples of "unshift".
Pearl Angelica did not hear her aunt say that they could see the stars so clearly, their hues unshifted by their speed, because when the light reached them they were not going faster than light.
They were stationed on the forecastle, in readiness to make any alteration which the sails might require, but the wind was so steady and unshifting that no need arose for their services.
Speaker had given orders for his armchair to be brought out for him from the farmhouse, and he was sitting in it, his elbow on the arm and his chin in his hand, regarding the unshifting line of smoke with an immobile but somber countenance.
Fassin said uneasily, watching the still unshifting melee around the exit.
And all the time, though now he refused to turn his head toward her, he was conscious of the strangely disturbing certainty that those luminous eyes were regarding him with unshifting intensity.
Out from their shining spherical surfaces darted rays of the same pale gold, rigid, unshifting, with the same suggestion of frozen stillness.
Three times every day for the past week they had put on their moon boots and honeymoon winterwear and walked hand in hand to the canyon's edge, but all they had seen so far was an unshifting wall of fog.