Which eleven letter word is it???

[terencem2]

Which elven letter word begins and ends with the same three letters in order???

[beejay1124]

antioxidant

[johnalex]

UNDergroUND

[Quizmonkey]

I'm sure underground is the required answer as this is an old chestnut - but redelivered and ingathering work too.

[Muffet]

Entitlement. There must be dozens.

[The Builder]

I wonder if there are any where the letters are reversed :o)

[joto]

Calendrical

[joto]

Builder, how about abracadabra?

[joto]

microcosmic

[The Builder]

Nice one joto - but it would have to be abracadarba :o)