- 1[intransitive] lag (behind somebody/something) | lag (behind) to move or develop slowly or more slowly than other people, organizations, etc. synonym trail The little boy lagged behind his parents. We still lag far behind many of our competitors in using modern technology.
- 2[transitive] lag something (with something) (British English) to cover pipes, etc. with a special material to stop the water in them from freezing, or to save heat synonym insulate Word Originverb sense 1 early 16th cent. (as a noun in the sense ‘hindmost person in a game, race, etc.’, also ‘dregs’): related to the dialect adjective lag (perhaps from a fanciful distortion of last, or of Scandinavian origin: compare with Norwegian dialect lagga
BrE BrE//læɡ//; NAmE NAmE//læɡ//Verb Forms present simple I / you / we / they lag
BrE BrE//læɡ//; NAmE NAmE//læɡ//he / she / it lags
BrE BrE//læɡz//; NAmE NAmE//læɡz//past simple lagged
BrE BrE//læɡd//; NAmE NAmE//læɡd//past participle lagged
BrE BrE//læɡd//; NAmE NAmE//læɡd//-ing form lagging
BrE BrE//ˈlæɡɪŋ//; NAmE NAmE//ˈlæɡɪŋ//