noun
future good luck; good luck to come
Specifically refers to a fortune-telling result from omikuji, indicating that good luck will come later, though the present may be modest. Compare with 大吉 (great blessing) and 凶 (bad luck).
See also: おみくじ
おみくじを引いたら末吉だった。
When I drew an omikuji, it was 'future good luck'.
末吉は、今はあまり良くなくても、これから運が開けるという意味
Suekichi means that even if things aren't great now, your luck will improve from here on.
From 末 (end, future) and 吉 (good luck), literally 'future good luck'. The term is used in the context of omikuji fortune slips.