teigr (Welsh) comes from English Tiger, from Middle English tygre, from Old French tigre, from Latin tīgris, from Ancient Greek Τίγρις, from Old Persian 𐎫𐎡𐎥𐎼𐎠, from Akkadian 𒀀𒇉𒈦𒄘𒃼, from Sumerian 𒀀𒇉𒈦𒄘𒃼 — as fast as an arrow.
teigr (Welsh): a tiger