Agnosticism, substantiv
Sinonime: ateism, necredință, materialism, relativism, scepticism.  

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Filozofie, substantiv feminin
Sinonime: agnosticism, antropocentrism, antropomorfism, antropopatism, asociaționism, ataraxie, atomism, averroism, bergsonism, cartezianism, cazualism, conceptualism, confucianism, constructivism, convenționalism, creaționism, daoism, deism, determinism, dialectică, doctrină, dualism, emanatism, emanaționism, empiriocriticism, empiriomonism, energetism, epicurism, epifenomenalism, epistemologie, estetică, etică, existențialism, fatalism, fenomenalism, fenomenism, fenomenologie, ficționalism, fideism, filozofem, finalism, fizicalism, formalism, gândire (profundă), gândirism, gimnozofie, gnoseologie, gnosticism, hegelianism, hilozoism, holism, idealism, ideologie, iluminism, indeterminism, infinitism, instrumentalism, intelectualism, intuiționism, iraționalism, înţelepciune, kantianism, kantism, luminism, machism, marxism-leninism, materialism, mecanicism, metafizică, moderație, monadism, monism, morală, nativism, naturalism, neoconfucianism, neohegelianism, neokantianism, neoplatonism, neopozitivism, neoraționalism, neorealism, neotomism, ocazionalism, operaționalism, panpsihism, panteism, peripatetism, personalism, pironism, pitagorism, platonism, pozitivism, pragmatism, predeterminism, preformism, priticism, raționalism, relativism, scientism, scolastică, semanticism, senzualism, sistem, solipsism, speculație, spinozism, spiritualism, stoicism, structuralism, subiectivism, știință, teism, teleologie, teologie, teorie, teozofie, teză, tomism, utilitarism, vitalism, voluntarism.  Scepticism, substantiv neutru
Sinonime: agnosticism, criticism, incredibilitate, incredulitate, îndoială, neîncredere, nihilism, pironism, pragmatism, rezervă.  Ateism, substantiv
Sinonime: agnosticism, impietate, incredulitate, ireligiozitate, materialism, necredinţă.  Pozitivism, substantiv
Sinonime: (pozitivism logic) neopozitivism; agnosticism, materialism, practicism, raționalism, realism, relativism, utilitarism.  Relativism, substantiv
Sinonime: agnosticism, istorism, pozitivism, realism, relativitate, scepticism.  Incredulitate, substantiv
Sinonime: agnosticism, bănuială, indecizie, infidelitate, neîncredere, scepticism, suspiciune, vacilațiune.