Is a p-value of .047 statistically significant? I ran a Kruskal-Wallis H test and the result was .000. So, I ran a post hoc pairwise comparison to see where the difference precisely exists, and one of the results was a p-value of .047. SPSS did not highlight it in yellow like the other significant results.
Should I report it as a statistically significant or insignificant different?

It depends on whether it is bigger than the significance level that the specified significance level $\alpha$, which is often taken to be $0.05$... or $0.005$ - so there is no definite answer to your question.
