To experience or undergo pain, distress, or hardship. She suffered greatly after the accident.
To endure or tolerate something unpleasant or undesirable. He suffered the long commute to work every day.
To be subject to a negative condition or situation. The crops suffered from the lack of rain.
Archaic or formal: to allow, permit, or tolerate (someone or something) to do something. "Suffer the little children to come unto me."