PERTINENT, PERTINENTLY
ADJECTIVES
1593 — EFFECTUAL to the point, pertinent, conclusive → obs.
1942 — OFF THE BEAM incorrect, wrong, mistaken; not pertinent or applicable; functioning poorly → US sl.
1950 — PERPENDENT pertinent, dependant
ADVERBS
1583 — EFFECTUALLY pertinently, to the purpose, explicitly → obs.
Lexicophilia 