Un, before an adjective, denotes negation, or privation, as, worthy, unworthy, or “not worthy.” Before verbs it denotes the undoing or the destroying of the energy or act, expressed by the verb, as, say, unsay, that is, “affirm,” retract the “affirmation.”
Up, denotes motion upwards, as, start, upstart; rest in a higher place, as, hold, uphold; sometimes subversion, as, set, upset.
With, signifies against, as, stand, withstand, that is, “stand against, or resist.”
The Latin prepositions used in the composition of English words are these, ab or abs, ad, ante, con, circum, contra, de, di, dis, e or ex, extra, in, inter, intro, ob, per, post, præ, pro, præter, re, retro, se, sub, subter, super, trans.
A, ab, abs, signify from or away, as, to abstract, that is, “to draw away.”
Ad, signifies to or at, as, to adhere, that is, “to stick to.”
Ante, means before, as, antecedent, that is, “going before.”
Circum, round, about, as, circumnavigate, or “sail round.”
Con, com, co, col, signify together, as, convoke, or “call together,” co-operate, or “work together,” colleague, “joined together.”
Contra, against, as, contradict, or “speak against.”