Thought'less adverb 1. Lacking thought; careless; inconsiderate; rash; as, a thoughtless person, or act. 2. Giddy; gay; dissipated. [ R.] Johnson. 3. Deficient in reasoning power; stupid; dull. « Thoughtless as monarch oaks that shade the plain.&... Found on http://www.encyclo.co.uk/webster/T/48
uncaringadjective without care or thought for others; `the thoughtless saying of a great princess on being informed that the people had no bread; `Let them eat cake`` Found on https://www.encyclo.co.uk/local/20974