Synonyms of 'inadvisable'
For three days it was inadvisable to leave the harbour.
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If you describe something that someone does as ill-advised, you mean that it is not sensible or wise.
She said his remarks had been ill-advised.
not politic or expedient; unwise
If you describe someone's behaviour as imprudent, you think it is not sensible or carefully thought out.
an imprudent investment he made many years ago
Thesaurus for inadvisable from the Collins English Thesaurus
A course of action that is inadvisable should not be carried out because it is not wise or sensible .