From tweak + -y. <span class="searchmatch">tweaky</span> (comparative tweakier, superlative tweakiest) (colloquial) Involving minor adjustments. 2007, Michael Miller, iPodpedia: The Ultimate...
tweakiest superlative form of <span class="searchmatch">tweaky</span>: most <span class="searchmatch">tweaky</span>...
tweakier comparative form of <span class="searchmatch">tweaky</span>: more <span class="searchmatch">tweaky</span>...