懈 ⇒
无懈可击 wúxièkějī, [無懈可擊], invulnerable
坚持不懈 jiānchíbùxiè, [堅持不懈], to persevere unremittingly (idiom); to keep going until the end
松懈 sōngxiè, [鬆懈], to relax/to relax efforts/to slack off/to take it easy/complacent/undisciplined
不懈 bùxiè, untiring/unremitting/indefatigable
懈怠 xièdài, slack/lazy/remiss
不懈努力 懈 xiè, lax/negligent
弛 ⇒
松弛 sōngchí, [鬆弛], to relax/relaxed/limp/lax
弛缓 chíhuǎn, [弛緩], to relax/to slacken/relaxation (in nuclear magnetic resonance)
弛 chí, to unstring a bow/to slacken/to relax/to loosen
有张有弛 张弛 zhāngchí, [張弛], tension and relaxation
飞弛