solipsism

n [U] (philosophy 哲) theory that one can have knowledge only of the self 唯我论（认为人的认识只限於自我）.

solemnly, solemnness, solenoid, Solent, solicit, solicitation, solicitor, Solicitor-General, solicitous, solicitously, solicitude, solid, solid-state, solidarity, solidification, solidify, solidity, solidly, soliloquize, soliloquise, soliloquy, solitaire, solitarily, solitary, solitary confinement, solitude, solo, soloist, solstice, solubility, soluble, solution, solution to, solvable, solve, solvency, solvent, solver, somatic, somber, sombre (US somber),