Synonym: failing, helplessness, impuissance. Similar words: darkness, sickness, thickness, homesickness, weariness, freakishness, weak, weaken. Meaning: ['wɪːknɪs] 
n. 1. a flaw or weak point 2. powerlessness revealed by an inability to act 3. the property of lacking physical or mental strength; liability to failure under pressure or stress or strain 4. the condition of being financially weak 5. a penchant for something even though it might not be good for you.
n. 1. a flaw or weak point 2. powerlessness revealed by an inability to act 3. the property of lacking physical or mental strength; liability to failure under pressure or stress or strain 4. the condition of being financially weak 5. a penchant for something even though it might not be good for you. 241 The fragility of crystal is not a weakness but a fineness.
242 He writhed at the memory, revolted with himself for that temporary weakness.
More similar words: darkness, sickness, thickness, homesickness, weariness, freakishness, weak, weaken, weakling, earnestness, uselessness, selflessness, tactlessness, limitlessness, oneness, newness, coldness, slyness, witness, harness, fitness, hotness, finesse, shyness, illness, madness, sadness, ripeness, softness, hardness.