welter: [13] Welter was originally a verb, meaning ‘roll about’ (borrowed probably from Middle Dutch welteren, it came ultimately from the Germanic base *wal-, *wel- ‘roll’, source also of English wallet, wallow, waltz, etc, and is distantly related to English involve, revolve, etc). It was first used as a noun in the 16th century, in the sense ‘confusion, turmoil’, but the modern sense ‘confused mass, jumble’ did not emerge fully until the mid 19th century.
The welter of welter-weight [19], which originally meant ‘heavyweight horseman or boxer’, may be the same word, but it is perhaps more likely to have been derived from the verb welt in the sense ‘hit, thrash’. This originally meant ‘provide a shoe with a welt or strip of leather’, and was derived from the noun welt [15], a word of uncertain origin. => involve, revolve, volume, wallow, waltz, weld, well
welter (v.)
"to roll or twist," early 14c., from Middle Dutch or Middle Low German welteren "to roll," from Proto-Germanic *waltijan (cognates: Old English wieltan, Old Norse velta, Old High German walzan "to turn, revolve," German w?lzen "to roll," Gothic waltjan "to roll"), from PIE root *wel- (3) "to turn, revolve" (see volvox). Related: Weltered; weltering.
welter (n.)
1590s, "confusion," from welter (v.). The meaning "confused mass" is first recorded 1851.
例文
1. a welter of information
乱雑な情報が山ほどある
2.In trade（both goods and services），a welter of impediments persist.
商品貿易においてもサービス貿易においても、大量の乱雑な障害がある。
3.In the latest welter of housing data，some have seen green shoots.
最近の雑然とした住宅データに回復の芽を見た人もいる。
4.He lay there rolling 'round in the welter of his gore.
彼はそこに置いて回転'彼の流出血が逆巻くラウンド。
5.Mother told herson not to welter in pleasure and idleness.