Lewis Short
(adjective) : sum-mŏlestus (subm-), a, um
* Somewhat troublesome or vexatious (very rare): illud est mihi submolestum, quod, etc.,Cic. Att. 16, 4, 4.—Adv.: summŏle-stē, with some vexation: aliquid ferre,Cic. Att. 5, 21, 1.
Charlton T. Lewis, Charles Short, A Latin Dictionary