1. Unnecessary and unwarranted
   "a strikers' tent camp...was burned with needless loss of life"
   - gratuitous, uncalled-for

See also: needlessly, unnecessary, unneeded

• unwisely
• unwiseness
• unwished
• unwished-for
• unwitting
• unwittingly
• unwomanly
• unwonted
• unwontedly
• unwooded
• unworkable
• unworkmanlike
• unworldly
• unworn
• unworried
• unworthily
• unworthiness
• unworthy
• unwounded
• unwoven
• unwrap
• unwrapped
• unwrinkled
• unwritten
• unwritten law