welsh

Từ điển Oxford Advanced Learner 8th

welsh f7 [welsh welshes welshed welshing] BrE [welʃ] NAmE [welʃ] (also welch) verb intransitive ~ (on sb/sth) (disapproving, informal)
to not do sth that you have promised to do, for example to not pay money that you owe
•‘I'm not in the habit of welshing on deals,’ said Don.
See also: ↑welch
Verb forms:

Word Origin:
mid 19th cent.: of unknown origin.

• Từ đồng nghĩa / Synonyms:
  Welsh, Cambrian, Welsh Black, Cymric, Welshman, Cymry, welch