italicize

UK: /ɪˈtælɪˌsaɪz/

US: /ɪˈtæləˌsaɪz, aɪˈtæl-/

US: (i tal′ə sīz′, ī tal′-)

Inflections of 'italicize' (v): (⇒ conjugate)

italicizes

v 3rd person singular (US & UK)

italicizing

v pres p (US & UK)

italicized

v past (US & UK)

italicized

v past p (US & UK)

WordReference Random House Learner's Dictionary of American English © 2025

i•tal•i•cize /ɪˈtæləˌsaɪz, aɪˈtæl-/   v., -cized, -ciz•ing. 

1. Printing to print in italic type; to use italic print: [~ + object]
   to italicize a line.
   [no object]
   The laser printer italicizes.

i•tal•i•ci•za•tion /ɪˌtæləsəˈzeɪʃən, aɪˌtæl-/  n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2025

i•tal•i•cize  (i tal′ə sīz′, ī tal′-), v., -cized, -ciz•ing. 
v.t. 

1. Printing to print in italic type.
2. Printing to underscore with a single line, as in indicating italics.

v.i. 

3. Printing to use italics.

Also,[esp. Brit.,] i•tal′i•cise′. 

• italic + -ize 1785–95

i•tal′i•ci•za′tion, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

italicize, italicise / ɪˈtælɪˌsaɪz/ verb

1. to print (textual matter) in italic type
2. (transitive) to underline (letters, words, etc) with a single line to indicate italics

iˌtaliciˈzation, iˌtaliciˈsation noun