This is the 11281st most frequent Catalan word.
trampós
Deceitful; cheating.
The word "trampós" is used here as an adjective to describe the player's dishonest actions.
És un jugador molt trampós durant els partits.
He is a very cheating player during the games.
Here, "trampós" is used as a noun to refer to a deceitful person.
Ser trampós no porta bons resultats a la llarga.
Being deceitful does not yield good results in the long run.
In this context, "trampós" (modified as "tramposa") is an adjective describing the strategy as deceitful.