I admit to little skill, but it appears to say approximately "stargazing."
[s][t+a][r][ng+a][z+i][n][ng] (Note that there is no simple "g" sound in Quenya.)
I ruled out Sindarin in favor of Quenya because Sindarin diphthongs place the vowel before the consonant, which would give "satragizng."
Thanks to Mark in the comments for pointing out the clarification: this is an English word written using the Tengwar script in the Quenya mode.