Commonly used words in written English - letter X with 13 words, sorted by frequency

The list of words starting with the letter X that occur frequently in written English is based on an analysis of the Google Books Ngram (a collection compiled by Peter Norvig in 2012, containing close to one trillion words).
  1. Word Frequency is calculated as the number of occurrences in one million words.
  2. Word Definition is sourced from the WordNet dictionary. You'll have to look up each word page for its complete definition and Part of Speech (POS) categories.
Word Frequency Definition
x
184
(noun) the 24th letter of the Roman alphabet
xi
22
(noun) the 14th letter of the Greek alphabet
xii
18
(adjective) denoting a quantity consisting of 12 items or units; (noun) the cardinal number that is the sum of eleven and one
xiii
16
(adjective) being one more than twelve; (noun) the cardinal number that is the sum of twelve and one
xiv
16
(adjective) being one more than thirteen; (noun) the cardinal number that is the sum of thirteen and one
xv
13
(adjective) being one more than fourteen; (noun) the cardinal number that is the sum of fourteen and one
xvi
12
(adjective) being one more than fifteen; (noun) the cardinal number that is the sum of fifteen and one
xvii
9
(adjective) being one more than sixteen; (noun) the cardinal number that is the sum of sixteen and one
xviii
9
(adjective) being one more than seventeen; (noun) the cardinal number that is the sum of seventeen and one
xx
9
(noun) (genetics) normal complement of sex chromosomes in a female
xix
8
(adjective) being one more than eighteen; (noun) the cardinal number that is the sum of eighteen and one
xxi
6
(adjective) being one more than twenty; (noun) the cardinal number that is the sum of twenty and one
xxii
5
(adjective) being two more than twenty; (noun) the cardinal number that is the sum of twenty-one and one
xxiii
5
(adjective) being three more than twenty; (noun) the cardinal number that is the sum of twenty-two and one