tossup

[taws-uhp, tos-] /ˈtɔsˌʌp, ˈtɒs-/
noun
1.
the tossing of a coin to decide something by its fall.
2.
an even choice or chance:
It's a tossup whether they'll come or not.
Origin
1740-50; noun use of verb phrase toss up
Examples from the web for tossup
  • So maybe it's a tossup for those who can afford the monthly tariff.
  • It could fall to the tossup category if the race continues to narrow.