THESAURUS
Irrigate
adulterate, asperge, attenuate, baptize, bath, bathe, bedew, bespatter, besprinkle, cut, dabble, damp, dampen, dash, dew, dilute, douche, flush, flush out, gargle, holystone, hose, hose down, humect, humectate, humidify, lather, launder, lave, moisten, mop, mop up, paddle, rarefy, reduce, rinse, rinse out, ritually immerse, scour, scrub, scrub up, shampoo, shower, slobber, slop, slosh, sluice, sluice out, soap, sparge, spatter, splash, splatter, sponge, spray, sprinkle, swab, swash, syringe, thin, toivel, tub, wash, wash out, wash up, water, water down, wet, wet down
ROGET THESAURUS
Irrigate
Water
VB
be watery, reek, add water, water, wet, moisten, dilute, dip, immerse, merge, immerge, submerge, plunge, souse, duck, drown, soak, steep, macerate, pickle, wash, sprinkle, lave, bathe, affuse, splash, swash, douse, drench, dabble, slop, slobber, irrigate, inundate, deluge, syringe, inject, gargle.
River
VB
flow, run, meander, gush, pour, spout, roll, jet, well, issue, drop, drip, dribble, plash, spirtle, trill, trickle, distill, percolate, stream, overflow, inundate, deluge, flow over, splash, swash, guggle, murmur, babble, bubble, purl, gurgle, sputter, spurt, spray, regurgitate, ooze, flow out, rain hard, rain in torrents, rain cats and dogs, rain pitchforks, pour with rain, drizzle, spit, set in, mizzle, flow into, fall into, open into, drain into, discharge itself, disembogue, pour, pour out, shower down, irrigate, drench, spill, splash, stanch, dam, up, obstruct.