To be rough or careless in speech or action; to lack a sense of propriety or restraint; to be tactless and inconsiderate.
他说话总是没轻没重，常常不小心就得罪了人。
He always speaks carelessly and without restraint, often inadvertently offending people.
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To be rough or careless in speech or action; to lack a sense of propriety or restraint; to be tactless and inconsiderate.