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From letters P, S, Y, C, H, O, A, N, A, L, Y, Z, I, N, G  I made following words

15 letter words

psychoanalyzing[37]

11 letter words

nonphysical[21], anchylosing[20], calypsonian[18]

10 letter words

chalazions[23], anaglyphic[21]

9 letter words

gazpachos[25], chalazion[22], philogyny[21], analyzing[21], lynchpins[19], lynchings[18], anaglyphs[18], syphoning[18], canopying[17], poignancy[17], chaplains[16], naysaying[16], hangnails[13], analysing[13], pangolins[12], plainsong[12]

8 letter words

gazpacho[24], syzygial[23], psyching[19], lynchpin[18], physical[18], spinachy[18], canzonas[18], achingly[17], lynching[17], anaglyph[17], hopingly[17], phonying[17], synching[17], poaching[16], halcyons[16], polynyas[16], chaplain[15], calipash[15], pashalic[15], panochas[15], aphonics[15], nylghais[15], claypans[15], syncopal[15], clashing[14], chignons[14], paganish[14], plashing[14], longship[14], aglycons[14], palsying[14], splaying[14], posingly[14], spongily[14], clannish[13], acholias[13], clasping[13], scalping[13], aphonias[13], siphonal[13], acyloins[13], nonplays[13], hangnail[12], anhingas[12], langshan[12], shoaling[12], calpains[12], canaling[11], analogic[11], pangolin[11], solacing[11], clonings[11], cannolis[10], loanings[9]

7 letter words

glyphic[18], ciphony[17], sylphic[17], hypoing[16], halcyon[15], copying[15], phonily[15], clayish[15], lychnis[15], apishly[15], panocha[14], aphonic[14], aphasic[14], paschal[14], caliphs[14], spinach[14], isopach[14], chopins[14], phonics[14], nylghai[14], claypan[14], pliancy[14], hayings[14], shingly[14], chignon[13], phoning[13], cashing[13], chasing[13], coshing[13], hasping[13], pashing[13], phasing[13], shaping[13], claying[13], aglycon[13], cloying[13], playing[13], ploying[13], ponying[13], galyacs[13], aliyahs[13], glycans[13], glycins[13], hyalins[13], syncing[13], cosying[13], spaying[13], spangly[13], acholia[12], placing[12], aphonia[12], poncing[12], scholia[12], lochans[12], chanson[12], noncash[12], scaping[12], spacing[12], planish[12], copings[12], scoping[12], cannily[12], acyloin[12], nonplay[12], cyanins[12], syconia[12], canyons[12], anhinga[11], haloing[11], calpain[11], lashing[11], longish[11], noshing[11], apicals[11], spacial[11], caplins[11], inclasp[11], analogy[11], gainsay[11], slaying[11], nongays[11], lancing[10], coaling[10], cloning[10], paginal[10], planing[10], lacings[10], scaling[10], closing[10], hosanna[10], consign[10], lapsing[10], palings[10], sapling[10], pinangs[10], soaping[10], sloping[10], spongin[10], anconal[9], cannoli[9], asocial[9], canolas[9], alnicos[9], oilcans[9], salpian[9], anopias[9], anopsia[9], paisano[9], saponin[9], nonslip[9], anginal[8], logania[8], loaning[8], agnails[8], anginas[8], lignans[8], linsang[8], laogais[8], agnosia[8], analogs[8], goannas[8], longans[8], alanins[7], solanin[7]