celoso
jealous
jealous
jealous
+
-oso
full of
Celoso means jealous and can be thought of as related to the English word jealous0 with the Spanish suffix -oso1 (full of1), implying 'full of jealousy'.
adjective
- jealousFeeling or showing envy of someone or their achievements and advantagesÉl está celoso del éxito de su hermano. // He is jealous of his brother's success.