cs-term contested
upsilon is most commonly pronounced "up sih lon" (/ˈʌpsɪlɒn/). This is one of several readings in active use; the developer community hasn't converged on a single answer.
Greek letter υ; "UP-sih-lon" vs "yoop-SY-lun".
Alternate readings you might hear:
/juːpˈsaɪlən/Pronouncing project and product names correctly avoids the small but persistent friction of being gently corrected during standups, conference Q&As, and team calls. Hearing the word a few times locks in the right reading better than reading IPA ever will. Pronounce is a community-maintained dictionary — every entry tagged with a confidence level and (where possible) a citable source.
upsilon is pronounced "up sih lon" (/ˈʌpsɪlɒn/). Greek letter υ; "UP-sih-lon" vs "yoop-SY-lun".
The IPA for upsilon is /ˈʌpsɪlɒn/, respelled "up sih lon".
Yes — "yoop sigh lun" (/juːpˈsaɪlən/) is one of the alternate readings of upsilon in active use.
Install the CLI: git clone https://github.com/anzy-renlab-ai/pronounce.git && cd pronounce && ./install.sh
This whole page exists because of a community-maintained TSV. If it saved you a cringey moment, drop a star.
★ Star on GitHub