Suggestionize 

サジェストアイオナイズ - to influence by the power of suggestion

When David Tennant's 10th doctor would suggestionize someone the result was often notably substantial -- likely due to his excessive charm.

Suggestionize by MoribundMurdoch June 26, 2021

Suggestionist 

A person who constantly suggests alternate, usually inferior or unworkable ways of doing things. They tend to have little or no experience of the task at hand or even a basic understanding of physics or common sense.

Mitch: “Why don’t we put this on pipes and roll it?”
Frank: “Cause that wouldn’t work dumbass”
Mitch: “Well, what if we took it out to the balcony and hoisted it down with like a pulley or something?
Frank: “What if you stopped being a suggestionist?”

Suggestionist by THE LANDLORD December 13, 2018

suggestioning 

Posing suggestive remarks

Offer advice and suggestioning.

suggestioning by Hercolena Oliver January 26, 2009