roughly speaking

Translations
грубо говоря
Roughly speaking, the project will take about six months to complete.
Грубо говоря, проект займет около шести месяцев.
Definitions
An expression used to indicate that a statement is an approximation or a generalization, rather than a precise or detailed account.
Words
roughly

adverb
приблизительно
speaking

verb
говоря