noncontroversial

adjective

1. of, relating to, or characteristic of controversy, or prolonged public dispute, debate, or contention; polemical: a controversial book.
2. subject to controversy; debatable: a controversial decision.
3. given to controversy; argumentative; disputatious: a controversial public figure.

adjective

1. not causing dispute, argument, debate, etc

adj.1580s, from Late Latin controversialis “pertaining to controversy,” from Latin controversia (see controversy).