He has a tenacious character — he never gives up easily.
Tips
memory
Think 'flexible-tough': a thin bamboo whip that bends without breaking is 韧. Common compounds: 坚韧 (jiānrèn, 'tough and resilient'), 韧性 (rènxìng, 'toughness, tenacity'), 韧带 (rèndài, 'ligament'), 韧劲 (rènjìn, 'staying power').
Left leather radical — simplified from 韋, originally a top-bottom view of two feet circling a guarded enclosure, later borrowed for 'soft, supple leather.' Indexes 韧 in the leather family with 韬 sheath, 韩 surname Han. 韧 means tough and pliable — exactly the quality of well-tanned hide.
Right side 刃 supplies the sound rèn exactly, and adds a sharp semantic flavour: 刃 is the edge of a blade (a 刀 knife with a dot marking the cutting line). A material that takes the blade and bends without breaking is 韧 — tough leather that meets steel without splitting. A neat sound-and-sense pairing.
