careless;  stupid;  thoughtless;  heedless;  unobservant;  inadvertent
 striding;  swaggering;  strutting;  lording it over others;  acting as though one owns the place;  throwing one's weight around
 openhearted;  frank;  broad-minded
 free and easy;  open and natural;  not fastidious
 to apologize for a long neglect of friends (apologise)
 not having met or contacted someone for a long time;  neglect of friends
 spaciousness;  extensiveness;  expansiveness;  vastness
 upbeat and freehearted;  cheerful and magnanimous
 the open sky and the serene sea;  as open as the sky and serene as the sea;  magnanimous
 very careless;  quite thoughtless
 cheerful;  lively;  lighthearted
 broad-minded and free in disposition;  large-hearted and not scrupulous about trifles
 spaciousness;  extensiveness;  expansiveness;  vastness
 magnanimous in one's attitude of mind;  grand in one's idea or mind-set