per·ti·nent 
(pûrtn-ənt)
(pûrtn-ənt)adj.
Clearly related to a matter at hand. See Synonyms at relevant.
[Middle English, from Old French partenant, pertinent, from Latin pertinēns, pertinent-, present participle of pertinēre, to pertain; see PERTAIN.]
perti·nence, perti·nen·cy n.
perti·nent·ly adv.