1Apparently but not really; seemingly: quasi-American quasi-scientific
supposedly, seemingly, apparently, allegedly, reportedly, professedly, ostensibly, on the face of it, to all appearances, on the surface, to all intents and purposes, outwardly, superficially, purportedly, nominally, by one's/its own account, on paper; pseudo-
rare pretendedly, ostensivelysupposed, seeming, apparent, alleged, reported, ostensible, purported, nominal, so-called, would-be, pseudo-; bogus, sham, phoney, imitation, artificial, mock, ersatz, fake, forged, feigned, pretended, simulated, false, spurious, counterfeit, fraudulent, deceptive
British informal cod
1.1Being partly or almost: quasicrystalline
partly, partially, in part, part, to a certain extent/degree, to a limited extent/degree, to some extent/degree, half, in some measure, relatively, comparatively, moderately, (up) to a point, a little, somewhat; almost, nearly, very nearly, just about, all but, not totally, not wholly, not entirely, not fully, incompletely
from Latin quasi 'as if, almost'.