infratonsillar

in·fra·ton·sil·lar

(in-fră-ton'si-lăr),
Below the palatine tonsil or cerebellar tonsil.

infratonsillar

(ĭn″fră-tŏn′sĭ-lăr) [″ + tonsilla, almond]
In the pharynx below the tonsils.