We have put together a list of words that are similar to IRRIGATE.

5 Alternative Words Similar to irrigate

1 Water Verb      Synonym Words Like Water
2 Treat Verb      Synonym Words Like Treat
3 Wet Verb      Synonym Words Like Wet
4 Bedew Verb-transitive      Synonym Words Like Bedew
5 Flush Verb      Hyponym Words Like Flush

10 definitions of irrigate

1 To water; to wet; to moisten with running or dropping water; to bedew.
2 To water, as land, by causing a stream to flow upon, over, or through it, as in artificial channels.
3 To rinse (a wound, infected area, etc.) with a flow or spray of a liquid.
4 supply with a constant flow or sprinkling of some liquid, for the purpose of cooling, cleansing, or disinfecting
5 supply with water, as with channels or ditches or streams
6 To supply (dry land) with water by means of ditches, pipes, or streams; water artificially.
7 To wash out (a body cavity or wound) with water or a medicated fluid.
8 To make fertile or vital as if by watering.
9 To supply land with water artificially.
10 To pass a liquid over or through; moisten by a flow of water or other liquid.
We get our data from many different dictionaries across the web:
Wordnik, Wiktionary, Century, American Heritage, Gcide