invalidity

n [U] state of being an invalid 病弱; 伤残; 久病: [attrib 作定语] an invalidity pension 伤病残补助金.

intrude, intruder, intrusion, intrusive, intuit, intuition, intuitional, intuitive, intuitively, intumescence, Inuit, inundate, inundation, inure, inured, invade, invader, invalid, invalidate, invalidism, invaluable, invariability, invariable, invariably, invariance, invasion, invasive, invective, inveigh, inveigle, invent, invention, inventive, inventor, inventory, inverse, inversely, inversion, invert, invertebrate,