I.
noun
Lag is used after these nouns: ↑ time
II.
verb
ADVERB
▪ badly , seriously , well
▪ behind
▪
She did well in her first year but then started to ~ behind.
PREPOSITION
▪ behind
▪
Catering salaries ~ far behind those of other sectors.
▪
Britain still ~s badly behind the rest of Europe on this.
PHRASES
▪ ~ far behind (sb/sth) , ~ way behind (sb/sth) , ~ well behind (sb/sth)
▪
The party is still lagging way behind in the opinion polls.
Lag is used with these nouns as the object: ↑ pipe