312

painstakingly

with great effort

313

parallel

develop at the same time and rate/match

314

peak

high point

315

peculiar to

unique to

316

perceive

see

317

perfected

completed/improved

318

periodically

at regular intervals of time

319

permanent

constant

320

perplexing

puzzling

321

persistent

lasting

322

persuasive

convincing

323

pertinent

relevant

324

pierced

broke through

325

pioneering

original

326

plague

cause trouble for

327

plausible

reasonable

328

plentiful

abundant/numerous

329

pointed out

stated

330

posed

presented

331

potential

possible

332

pragmatic

practical

333

precise

accurate

334

predominantly

mainly

335

predominate

are in the majority

336

preeminent

main

337

prelude to

introductory step to

338

preponderance

majority

339

prerequisite

requirement

340

presumably

it is reasonable to assume/probably

341

presumed

supposed

342

prevail

dominate

343

prevailing

dominant

344

profound

strong

345

profoundly

deeply

346

prohibit

prevent

347

prolonged

extended

348

promote

encourage

349

promoting

encouraging

350

prone to

subject to

351

proper

appropriate

352

properties

characteristics

353

proponents

supporters

354

proportion

size

355

prosperous

successful

356

proximate

close distance from

357

proximity

closeness

358

pursue

practice

359

pursuit

possession

360

put up with

tolerate