"specialest" in the adjective sense

1. particular, peculiar, special

unique or specific to a person or thing or category

"the particular demands of the job"

"has a particular preference for Chinese art"

"a peculiar bond of sympathy between them"

"an expression peculiar to Canadians"

"rights peculiar to the rich"

"the special features of a computer"

"my own special chair"

2. special

for a special service or occasion

"a special correspondent"

"a special adviser to the committee"

"had to get special permission for the event"

3. especial, exceptional, particular, special

surpassing what is common or usual or expected

"he paid especial attention to her"

"exceptional kindness"

"a matter of particular and unusual importance"

"a special occasion"

"a special reason to confide in her"

"what's so special about the year 2000?"

4. special

adapted to or reserved for a particular purpose

"a special kind of paint"

"a special medication for arthritis"

5. limited, special

having a specific function or scope

"a special (or specific) role in the mission"

6. particular, special

first and most important

"his special interest is music"

"she gets special (or particular) satisfaction from her volunteer work"

7. extra, special

added to a regular schedule

"a special holiday flight"

"put on special buses for the big game"

Source: WordNet® (An amazing lexical database of English)

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