The Theo Project

The Theo Project

Open Source Thesaurus Database




8306 Upd

Doppelganger, accordant, actual thing, affirmative, agent, agnate, agreeable, agreeing, akin, alike, all one, all the same, ally, alter ego, alternate, alternative, analogon, analogous, analogue, analogy, answerable, answering, associate, at one, backup, balance, ballast, brother, carbon copy, change, changeable, changeling, close, close copy, close match, coequal, coexistent, coexisting, coextensive, cognate, coherent, coincident, coincidental, coinciding, commensurate, commutable, commutative, companion, comparable, comparison, compatible, compeer, complement, complemental, complementary, concordant, concurring, conformable, congenator, congener, congenial, congruent, congruous, consentaneous, consentient, consideration, consistent, consonant, convertible, cooperating, cooperative, coordinate, copy, correlate, correlative, correspondent, corresponding, coterminous, counterbalance, counterfeit, counterpart, counterpoise, counterweight, dead ringer, deputy, ditto, double, dummy, duplicate, en rapport, equal, equalizing, equiparant, equipoise, equipollent, ersatz, even, exact counterpart, exchange, exchanged, facsimile, fake, fellow, fill-in, ghost, ghostwriter, give-and-take, harmonious, homograph, homologous, homonym, homophone, idem, identic, identical, identical same, image, imitation, in accord, inaccordance, in agreement, indistinguishable, inharmony, in rapport, in sync, in synchronization, interchangeable, interchanged, kindred spirit, like, like-minded, likeness, locum tenens, makeshift, makeweight, match, matching, mate, metaphor, metonymy, mock, much the same, mutual, near duplicate, next best thing, none other, no other, obverse, of a kind, of a piece, of a size, offset, of like mind, of one mind, on all fours, opposite number, parallel, paralleling, peer, pendant, permutable, personnel, phony, picture, pinch, pinch hitter, positive, proportionate, provisional, proxy, quid pro quo, reciprocal, reciprocating, reciprocative, reconcilable, relief, replacement, replica, representative, reserve, reserves, retaliatory, returnable, ringer, rival, secondary, second self, second string, self-consistent, selfsame, setoff, sign, similar, similitude, simulacrum, sister, something of value, soul mate, spare, spares, spit and image, spitting image, stand-in, standard, stopgap, sub, substituent, substitute, substitution, succedaneum, such, suchlike, superseder, supplanter, surrogate, swapped, switched, symbiotic, symbol, synchronized, synchronous, synecdoche, synonym, synonymous, tally, tantamount, temporary, tentative, the like of, the likes of, the same, the same difference, third string, tit for tat, token, traded, transposed, twin, unanimous, understudy, undifferenced, uniform, unisonant, unisonous, utility, utility player, very image, very same, vicar, vicarious, vice-president, vice-regent,

Unequal, unequivalent,

Random Words

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Copies of the Ebook and Paperback Theo 1
(Regular edition over 8,000 words )
Theo 1

TheO 1

Copies of the Ebook Theo 2

TheO 2

Theo 2 is a massive collection words
Over 31,000 reference words
Over 5,000 Antonyms
Over 500,000 words in all


WE have now introduced TheO 2.... over 31,000 reference words and over 5,000 anthonyms. It will be available as an e book only

Current Project Objectives

Replace all references to a word that are currently referenced as See [some other word]

800 to do

Add New Words

Current stats
31,0000 Reference words
over 500,000 Total words
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