>I checked by MS-Word, it returned 'not found'.
www.dictionary.com mentions it - but I had previously thought that this is not a valid English word. I only used it in Spanish (aleatorio, aleatoriamente - the prefix -mente is equivalent to -ly in English).
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)