Adjective negatives
You could use the adjective for "not boring": つまらなくありません
I'm working on learning conjugations, perhaps I'll try writing some sentences as well.
And a tidbit from earlier in the thread, 日本語 has been excised of a couple of syllables. wi: ゐヰ and we: ゑヱ. Useful for older texts, but not in the modern syllabery.
Dan