not to be placated or appeased or moved by entreaty; "grim determination"; "grim necessity"; "Russia's final hour, it seemed, approached with inexorable certainty"; "relentless persecution"; "the stern demands of parenthood"
not acceptable; not welcome; "a word unacceptable in polite society"; "an unacceptable violation of personal freedom"
not adequate to give satisfaction; "the coach told his players that defeat was unacceptable"
not conforming to standard usage; "the following use of `access' was judged unacceptable by a panel of linguists; `You can access your cash at any of 300 automatic tellers'"
in a manful manner; with qualities thought to befit a man; "having said her say Peggy manfully shouldered her burden and prepared to break up yet another home"