supposititious
pronunciation
                                            
                                                
                                                How to pronounce supposititious in British English:
                                                
                                                UK [sə'pɒzɪ'tɪʃəs] 
                                                
                                            
                                        
                                            
                                                
                                                How to pronounce supposititious in American English:
                                                
                                                US [səˌpɒzə'tɪʃəs]
                                                 
                                                
                                        
                                        
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                                                - Adjective:
- based primarily on surmise rather than adequate evidence
 
Word Origin
- supposititious (adj.)
- "put by artifice in place of another," 1610s, from Latin supposititius, from suppositus, past participle of supponere (see suppose).