1. Air pollution by a mixture of smoke and fog
   - smog

See also: smoggy

Type of: air pollution

• unwelcome person
• unwell
• unwellness
• unwholesome
• unwholesomeness
• unwieldiness
• unwieldy
• unwilled
• unwilling
• unwillingly
• unwillingness
• unwind
• unwire
• unwise
• unwisely
• unwiseness
• unwished
• unwished-for
• unwitting
• unwittingly
• unwomanly
• unwonted
• unwontedly
• unwooded
• unworkable