Sedulous

adj. (of a person or action)

  1. showing dedication and diligence: he watched himself with the most sedulous care.

[The Prelude — William Wordsworth]

Sedulous

adjective

(of a person or action) showing dedication and diligence: he watched himself with the most sedulous care.

[A Room with a View — E. M. Forster]

Sententious

adj.

  1. Given to moralizing in a pompous or affected manner.

[“The Shadow Over Innsmouth” — H.P. Lovecraft]