undiluted

diminish, dilution, weaken, undermine, erode, sully, depress, complicate, cheapen, undercut, taint, tarnish, heighten, negate, curtail, hamper, lessen, enhance, homogenize, dampen, exacerbate, restrict, impair, jeopardize, hinder, marginalize, detract, entrench, saturate, alienate, appease, adulterate, cannibalize, amplify, strengthen, sweeten, bolster, understate, magnify, infuse, alter, deprive, circumscribe, crystalise, assuage, add, vitiate, distort, homogenise, politicize, reduce, augment, contaminate, undervalue, scupper, aggravate, deplete, overshadow, impede, agitate, elevate, scuttle, overwhelm, deepen, mollify, constrain, inflame, backfire, overstate, ghettoize, subsume, crystallize, downplay, inject, allay, broaden, devalue, inhibit, soothe, neutralize, disrupt, placate, legitimize, usurp, reinforce, antagonize, constrict, inflate, confuse, retain, overcrowd, affect, ghettoise, undersell, oversubscribe, boost, imperil, destabilize, convolute, polarize, irritate, spoil, aqueous, arid, alkali, caustic, chlorine, cloudy, liquid, positive, un, admits, ammonia, c.c., con, ex, heavy, inner, outgoing, pre, saline, tender, diluted, acidified, concentrated, undiluted, supersaturated, acidulated, ammoniacal, supernatant, anhydrous, supercooled, hydrochloric, unbuffered, buffered, nonaqueous, saturated, turbid, distilled, unpurified

water down

acetum, battery acid, diabetes insipidus, electrolyte acid, lead-acid accumulator, lead-acid battery, polyuria, vinegar

thin

cut, debase, stretch, thin out, thinned, washy, watery, weak, weakened, white