adverbgan locht c m usaor ó locht c m uhe faultlessly completed the testchríochnaigh sé an triail gan aon bhotún a dhéanamhthe system has run faultlessly since it was installedtá an córas ag rith gan aon fhadhb ó suiteáladh émy car was faultlessly reliablebhí mo charr iontaofa gan teip