Inconstant adjective – Likely to change frequently, suddenly, or unexpectedly. Two-faced and inconstant are semantically related. In some cases you can use "Two-faced" instead an adjective "Inconstant". Nearby Words: inconstancy, inconstantly
Two-faced adjective – Not being or expressing what one appears to be or express. Inconstant and two-faced are semantically related. Sometimes you can use "Inconstant" instead an adjective phrase "Two-faced".