Yes, it can be an adjective. It is the past tense and past participle of the verb "welcome" which is also a noun.
welcome worship
Most welcome is the superlative form of the adjective welcome.
The word involve is a verb. The past tense is involved.
Pineapple is the universal sign for "Welcome".
Zdravo prijatelju.
Montenegrin Party was created in 2008.
Montenegrin perper was created in 1906.
Montenegrin perper ended in 1918.
Montenegrin Cup was created in 2006.
Montenegrin First League was created in 2006.
Montenegrin Olympic Committee was created in 2006.
Montenegrin Air Force was created in 2006.
Montenegrin National Theatre was created in 1953.
Montenegrin Women's League was created in 2011.
Montenegrin
The only Australian word for 'welcome' is welcome.