Gâcher vs. ruiner
In the French language, gâcher and ruiner are two verbs commonly used to express the idea of to ruin or to spoil. While they can sometimes be used interchangeably, they often carry different connotations and are applied in various contexts.
Gâcher
A2To waste or spoil something, often by not taking full advantage of an opportunity or by mismanaging something. It emphasizes a sense of waste or failure to utilize.
J'ai gâché ma chance de gagner le jeu.
(I wasted my chance to win the game.)
Ne gâche pas cette belle journée avec tes soucis.
(Don't spoil this beautiful day with your worries.)
Il a gâché tout le plat en ajoutant trop de sel.
(He spoiled the whole dish by adding too much salt.)
Ruiner
B1To destroy or bring to ruin, often suggesting a more severe and comprehensive form of damage. It implies a more intense and sometimes irreversible level of destruction.
La tempête a ruiné la récolte de l'année.
(The storm ruined this year's harvest.)
Faire ce choix pourrait ruiner sa carrière.
(Making that choice could ruin his career.)
Les termites ont ruiné la structure en bois de la maison.
(The termites have ruined the wooden structure of the house.)
Summary
Gâcher and ruiner both mean to ruin in French, but they are not perfect synonyms. Gâcher often conveys waste or a failure to use something fully or correctly, while ruiner typically suggests more extensive damage, decay, or destruction that can be irreparable.