think long and hard

think long and hard

to think very carefully about something before making a decision. I thought long and hard before deciding to leave my husband. He thought long and hard about how to tell the children. (often + about)

See also: hard, long, think

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think long and hard

to carefully consider something. Allen liked to think long and hard about each question, and his answers were always carefully expressed.

See also: hard, long, think