Canon speaking conventions are very sparse, but some words (mainly nouns) lead a double life as interjections.

Kogaan 'blessing' can be uttered separately to mean "I am grateful", "thank you", "it's a good thing this happened".

Krosis 'sorrow' can similarly cover "I am sorry", "what a pity", "too bad".

A polite request marker like 'please' is not known; commands are typically issued with the backing of authority or not at all.

In general, try the following when a word is missing:
(1) Synonyms. Looking for 'scalding'? Try 'burning'.
(2) Rephrasing. To avoid needing the absent verb 'like', phrase "I like Skyrim" as Keizaal brit wah zu'u.
(3) Legacy vocabulary. As an ultimate fallback, search the old fanmade dictionary of 6,000 entries (Language -> Legacy Dictionary). This won't necessarily be understood outside Thuum.org.