This is the 820th most frequent Turkish word.
neredeyse
Almost.
In this sentence, 'neredeyse' indicates that the action (being late) was on the verge of happening but ultimately did not occur.
Neredeyse okula geç kalıyordum.
I was almost late to school.
Here, 'neredeyse' expresses an approximation referring to the number of correctly answered questions.
Sınavdaki tüm soruları neredeyse doğru cevapladım.
I answered almost all of the questions on the exam correctly.
In this sentence, 'neredeyse' signifies the speaker performs the action (exercising) nearly daily, but with some exceptions.