that is easily noticed by the mind or the senses (Oxford)
so obvious that it can easily be seen or known, or (of a feeling) so strong that it seems as if it can be touched or physically felt (Cambridge)
The tension in the room was almost palpable. (Oxford)
His statement is palpable nonsense. (Oxford)
Her joy was palpable. (Cambridge)
a palpable tension
palpable nonsense
palpable joy
Noticeable
Evident
Doubtful
Concealed
palpably