1. Synonyms for Controversially include contentiously, debatably, disputably, disputedly, disputatiously, arguably, controvertibly, delicately, difficultly and

2. Arguably adverb possibly, potentially, conceivably, plausibly, feasibly, questionably, debatably, deniably, disputably, contestably, controvertibly, dubitably, refutably They are Arguably …

3. The heaviest wild tiger was disputably a huge male killed in 1967 by David Hassinger at the foothills of the Himalayas.