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ex·tra·cur·ric·u·lar adjective : lying outside the regular curriculum; especially : of or relating to school-connected activities (as sports) usu. carrying no academic credit

ex·tra·dite verb -dit·ed; -dit·ing : to obtain by or deliver up to extradition

ex·tra·di·tion noun : the surrender of an alleged criminal to a different jurisdiction for trial

ex·tra·mar·i·tal adjective : of or relating to sexual intercourse by a married person with someone other than his or her spouse

ex·tra·mu·ral adjective : existing or functioning beyond the bounds of an organized unit

ex·tra·ne·ous adjective 1 : coming from without

2 : not forming a vital part; also : IRRELEVANT

— ex·tra·ne·ous·ly adverb

Synonyms

immaterial, irrelevant—more at IRRELEVANT

ex·tra·net noun : a network like an intranet but also allowing access by certain outside parties

ex·traor·di·nary adjective 1 : notably unusual or exceptional

2 : employed on special service

— ex·traor·di·nari·ly adverb

Synonyms

atypical, exceptional, phenomenal, rare, uncustomary, unique, unusual—more at EXCEPTIONAL

ex·trap·o·late verb -lat·ed; -lat·ing : to infer (unknown data) from known data

— ex·trap·o·la·tion noun

Synonyms

conclude, deduce, gather, infer, judge, reason, understand—more at INFER

ex·tra·sen·so·ry adjective : not acting or occurring through the known senses

extrasensory perception noun : perception (as in telepathy) of events external to the self not gained through the senses and not deducible from previous experience

ex·tra·ter·res·tri·al adjective : originating or existing outside the earth or its atmosphere <~ life>

— extraterrestrial noun

ex·tra·ter·ri·to·ri·al adjective : existing or taking place outside the territorial limits of a jurisdiction

ex·tra·ter·ri·to·ri·al·i·ty noun : exemption from the application or jurisdiction of local law or tribunals

ex·trav·a·gance noun : an instance of excess or prodigality; specif : an excessive outlay of money

Synonyms

lavishness, prodigality, wastefulness; also bountifulness, generosity, liberality; improvidence, squandering; indulgence, overindulgence, self-indulgence; excess, immoderacy, overkill

Antonyms

economy, frugality

ex·trav·a·gant adjective 1 : exceeding the limits of reason or necessity : EXCESSIVE <~ claims>

2 : spending or tending to spend much more than necessary : spending lavishly, recklessly, or wastefully

3 : too costly

Synonyms

[1] excessive, extreme, immoderate, inordinate, lavish, overmuch, steep, stiff—more at EXCESSIVE

[2] prodigal, profligate, spendthrift, thriftless, unthrifty, wasteful—more at PRODIGAL

ex·trav·a·gant·ly adverb : in an extravagant manner

Synonyms

expensively, grandly, high, lavishly, luxuriously, opulently, richly—more at HIGH

ex·trav·a·gan·za noun 1 : a literary or musical work marked by extreme freedom of style and structure

2 : a spectacular show

ex·tra·ve·hic·u·lar adjective : taking place outside a vehicle (as a spacecraft) <~ activity>

1extreme adjective 1 : very great or intense <~ cold>

2 : very severe or radical <~ measures>

3 : going to great lengths or beyond normal limits

4 : most remote

5 : UTMOST; also : MAXIMUM

Synonyms

[3] excessive, immoderate, inordinate, overmuch, unconscionable—more at EXCESSIVE

[3] extremist, fanatic, rabid, radical, revolutionary, ultra; also subversive, violent, wild; reactionary

Antonyms

middle-of-the-road

[4] farthest, furthest, outermost, ultimate, utmost

Antonyms

inmost, innermost

2extreme noun 1 : something located at one end or the other of a range or series

2 : EXTREMITY 4

ex·treme·ly adverb : in an extreme manner : to an extreme extent

Synonyms

greatly, most, much, very—more at VERY

extremely low frequency noun : a radio frequency in the lowest range of the radio spectrum

ex·trem·ism noun : the quality or state of being extreme; especially : advocacy