Learn Finnish: Oletko kokeneempi kuin toinen suunnittelija? - Are you more experienced than the other designer?

The base word is kokenut (experienced), which is the past active participle of the verb kokea (to experience). When grading a past active participle, the -nut or -nyt ending changes to the stem -nee- before adding the comparative ending -mpi. This gives us kokeneempi (more experienced).

How would this sentence look if I used the superlative to ask "Are you the most experienced designer?"

To form the superlative of a past active participle, the -nut or -nyt ending changes to the stem -nei- before adding the superlative ending -n. The word becomes kokenein (most experienced), making the question Oletko kokenein suunnittelija?

Could I express "than the other designer" without using the word kuin?

Yes, you can use the partitive comparative structure. You drop kuin and put the noun phrase into the partitive case, placing it before the comparative adjective. The sentence would become Oletko toista suunnittelijaa kokeneempi? This is very common in written Finnish, though the version with kuin is often preferred in everyday speech.

I know toinen means "second". How do we know it means "other" here?