Decrease words size to make smaller than central word

Hello, so i have a word cloud that includes a central word and im trying to make sure that the central word is the biggest size. i have tried changing the weight of the other word but still some words are bigger than the central word. Is there a way that I can make the central word bigger than the rest of all the words ?
thanks

Try not using a central word but instead add it as a normal word with the biggest weight.

For certain shapes a central word is not the largest word. We try to place it centrally, so its not always possible to make it the largest word as well.