The word "depend it" is actually spelled "depend it." It may be confusing to spell it this way because it sounds like "depend + it." However, in English, there is no such word as "dependit." The phonetic transcription for "depend it" is /dɪˈpɛnd ɪt/. The stress falls on the first syllable, with a short "i" sound in "depend" and a short "i" sound in "it." So, if you ever need to write "depend it," remember to not add an extra "i" in the spelling.