gâcher

http://www.larousse.fr/dictionnaires/francais/g%C3%A2cher/35746
verbe transitif Conjugaison
(francique *waskôn, laver)
1. Définitions
Délayer du plâtre, du mortier, les malaxer avec de l'eau.

Faire échouer une action, un projet, compromettre le résultat, l'issue, la qualité de quelque chose : Gâcher une occasion. Votre mot malheureux a tout gâché.

Faire un mauvais emploi de quelque chose, ne pas l'utiliser au mieux : Gâcher son talent. C'est du temps gâché.

Faire un mauvais emploi de quelque chose en le gaspillant ; perdre : Gâcher de la nourriture.

2. Synonymes / Contraires
2-1. Faire échouer une action, un projet, compromettre le résultat,...
Synonymes :
bâcler
bousiller (familier)
cochonner (populaire)
massacrer (familier)
saboter
sabrer (familier)
Contraires :
fignoler
lécher (familier)
parachever
perler
soigner
2-2. Faire un mauvais emploi de quelque chose, ne pas l'utiliser au...
Synonyme :
galvauder
Contraires :
exploiter
jouir de
profiter de
2-3. Faire un mauvais emploi de quelque chose en le gaspillant ; perdre
Synonymes :
galvauder
gaspiller
gâter
Contraires :
économiser
épargner
garder

wash (v.)

http://www.etymonline.com/index.php?term=wash&allowed_in_frame=0
Old English wascan "to wash, cleanse, bathe,"
transitive sense in late Old English,
from Proto-Germanic *watskan "to wash"
(source also of Old Norse vaska, Middle Dutch wasscen, Dutch wassen, German waschen),
from stem *wed- "water, wet" (see water )

Used mainly of clothes in Old English (the principal verb for washing the body, dishes, etc. being þwean).
Old French gaschier "to stain, soil; soak, wash" (Modern French gâcher) is from Frankish *waskan,
from the same Germanic source.
Italian guazzare also is a Germanic loan-word.
To wash (one's) hands of something is 1550s,
from Pilate in Matthew xxvii.24.
To wash up "clean utensils after a meal" is from 1751.
Washed up "no longer effective" is 1923, theater slang, from notion of washing up at the end of a job.

water (n.)

http://www.etymonline.com/index.php?term=water&allowed_in_frame=0
Old English wæter,
from Proto-Germanic *watar
(source also of Old Saxon watar, Old Frisian wetir, Dutch water, Old High German wazzar, German Wasser, Old Norse vatn, Gothic wato "water"),
from PIE *wod-or,
from root *wed- (1) "water, wet"
(source also of Hittite watar, Sanskrit udrah, Greek hydor, Old Church Slavonic and Russian voda, Lithuanian vanduo, Old Prussian wundan, Gaelic uisge "water;" Latin unda "wave").

wet (adj.)

http://www.etymonline.com/index.php?term=wet&allowed_in_frame=0
Old English wæt "moist, rainy, liquid,"
also as a noun. "moisture, liquid drink,"
from Proto-Germanic *weta-
(source also of Old Frisian wet ).
Also from cognate Old Norse vatr;
all from PIE *wed- (1) "water, wet"