無 - nothingness, none, ain't

powerlessness; helplessness; incompetence; ineffectiveness

without

absurd; unreasonable; ridiculous

unreasonable; unnatural; unjustifiable

cannot do without something; indispensable; absolutely necessary

isn't it?

not writing or contacting for a while; neglecting (failing) to write (call, visit, etc.); long silence

groundless; entirely contrary to fact

nonsensical; unreasonable; absurd; unrealistic

safe (e.g. choice); secure; innocuous; inoffensive

of course; certainly; naturally

wireless local area network; wireless LAN; WLAN