Entry 2 senses · 2 variants Webster, 1913 Londonize · Lon·don·ize · IPA v. i. v. i. 01 v. i. To impart to (one) a manner or character like that which distinguishes Londoners. 1. To impart to (one) a manner or character like that which distinguishes Londoners. 02 v. i. To imitate the manner of the people of London. 1. To imitate the manner of the people of London.