undoubted

un|doubt|ed /ʌnd'aʊtɪd/
[ADJ] usu ADJ n
You can use undoubted to emphasize that something exists or is true.
The event was an undoubted success.
...a man of your undoubted ability.
● undoubtedly [ADV] ADV with cl/group, ADV before v
Undoubtedly, political and economic factors have played their part...
Hanley is undoubtedly a great player...