weightless
adj.
"having no weight," 1540s, from weight, n. + -less. Related: Weightlessly; weightlessness (1867).
| 词汇 | weightless | 
| 词根词缀 | Online Etymology Dictionary weightless adj. "having no weight," 1540s, from weight, n. + -less. Related: Weightlessly; weightlessness (1867). | 
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