Esoteric. Private, secret, acroamatic, inner, inmost; abstruse, profound; special, advanced.
Ant. Exoteric, public, popular; rudimentary, primary, elementary.
Essence. Nature, quintessence, substance, vital part, element; volatile part, extract; perfume; scent, odor; being, existence, entity, life.
Ant. Accident; property; garb, clothing, surroundings.
Essential. Vital, necessary, indispensable, requisite, important; volatile, pure, diffusible, highly rectified; innate, inherent, immanent, leading.
Ant. Accidental, induced, imported, adventitious; quantitative, qualitative; promotive, redundant, regulative, superfluous.
Establish. Fix, settle, make steadfast; decree, enact, ordain; institute, originate, constitute, found, plant, organize, form; place, secure, set up; confirm, sanction, ratify, approve; verify, prove, substantiate; fulfil, carry out, make good; endow; demonstrate.
Ant. Unsettle, supplant, disestablish, break up, subvert, upset; misstate, refute, confute; guess, conjecture, presume, suppose, surmise.
Estate. State, condition; rank, position; property, possessions, fortune, effects; class, division, order; lands, demesne, domain, freehold.
Ant. State, country, chattels, community, waste, goods, effects.