if (EN)
союз, существительное

союз “if”

if
  1. если
    If you study hard, you will pass the exam.
  2. если бы (для выражения гипотетической ситуации в прошлом)
    She would have arrived on time if she had caught the earlier train.
  3. хотя
    She's very talented, if somewhat lazy.
  4. ли
    She asked if he would be attending the party.
  5. если (для введения уточняющего условия)
    If it rains tomorrow, we will cancel the picnic.

существительное “if”

sg. if, pl. ifs or uncountable
  1. если (неопределённость)
    Winning the lottery is a big if, considering the odds are so low.