Speech you make to yourself.

synonym: monologue.

Roget 589: soliloquy, monologue, apostrophe; monology^†.   

Roget 582: speech, faculty of speech; locution, talk, parlance, verbal intercourse, prolation^†, oral communication, word of mouth, parole, palaver, prattle; effusion.    oration, recitation, delivery, say, speech, lecture, harangue, sermon, tirade, formal speech, peroration; speechifying; soliloquy etc. 589; allocution etc. 586; conversation etc. 588; salutatory : screed: valedictory [U.S.].    oratory; elocution, eloquence; rhetoric, declamation; grandiloquence, multiloquence^†; burst of eloquence; facundity^†; flow of words, command of words, command of language; copia verborum [Lat.]; power of speech, gift of the gab; usus loquendi [Lat.].    speaker etc. v.; spokesman; prolocutor, interlocutor; mouthpiece, Hermes; orator, oratrix^†, oratress^†; Demosthenes, Cicero; rhetorician; stump orator, platform orator; speechmaker, patterer^†, improvisatore^†.    ... show more

Dutch: alleenspraak, monoloog, zelfgesprek
Polish: solilokwium

A (usually long) dramatic speech intended to give the illusion of unspoken reflections.