| Kurdish | ziqàwa et var. | Lapwing, 158 |
| Arabic: Tun. | seksek | sandpipers, 180 |
| Arabic | siqsáq et var. | Spur-winged Plover, 159 |
| Sbc. | sikavcic | Chaffinch, 432 |
| Sbc. | sikiricica | Skylark, 297 |
| Sbc. | pocikivati | to cry |
| Sbc. | cikir | Meadow Pipit, 305 |
| Sbc. | cikavac et var. | Song Thrush, 339 |
| Germ.reg. | zickdröscherl | Song Thrush, 339 |
| Czech | cikac | Nuthatch, 401 |
| Czech | sykavec, sycavec | Chaffinch, 432 |
| Slk. | sekavec | Chaffinch, 432 |
| Ukr. | Sinkovic | Chaffinch, 432 |
| Ukr. | sykati, cykati | to whistle, chat etc. |
| Ukr. | Sykac | Great Grey Shrike, 324 |
| Ukr. | cikoten' | Song Thrush, 339 |
| Franç.: Vendôme | sicot | Song Thrush, 339 |
| Franç.: Jujurieux | sicotti | din, uproar, FEW 23: 197 |
| Pol. | czykutejka | Magpie, 288 |
| Pol. | ksykacz | Wood Warbler, 386 |
| Slk. | cikalka | Wood Warbler, 386 |
| Czech | sikavka, sicva | Wood Warbler, 386 |
| Sbc. | Sikavac | Little Owl, 242 |
| Ukr. | sykit, cekit | Red-backed Shrike, 326 |
| Lettish | sikt | buzz, whistle |
| Engl. (OE) | sican | to sigh; ME siken, sichen id. |
| Engl. | sigh | to let out one's breath audibly |
| Pol. | syczecz | to prattle |
| Pol. | syczec | to hiss |
| Sbc. | sycec | Skylark, 297 |
| Czech | sýc, sejc | Barn Owl, 238 |
| Sbc. | Sikavac | Little Owl, 242 |
| Sbc. | sicec | Great Tit, 390 |
| Czech | seyc | Great Grey Shrike, 324 |
| Ukr. | Sycyk | Great Grey Shrike, 324 |
| Ukr. | sycyk | Wren, 406 |
| Ukr. | syc | Wryneck, 279 |
| Bielor. | çiç | Little Owl, 242 |
| Bulg. | cicopej | Great Tit, 390 |
| Alb. | syqok | Jackdaw, 285 |
| Alb. | cëqe | flute; Song Thrush, 339; Blackbird, 343; Wren, 406; Tree Pipit, 307 |
| Sbc. | ciceznjak | Wren, 406 |
| Roman. | tichi, sichír | Wren, 406 |
| Ukr. | cikir, sikir, sikorka | Great Tit, 390 |
| Slk. | sýkorka | Great Tit, 390 |
| Pol. | sikora | Great Tit, 390 |
| Sbc. | sikiricica | Great Tit, 390; Skylark, 297 |
| Roman. | cicoricâ | Common Tern, 97 |
| Ital.: Sic. | zicchirriari | stridere |
| Ital.: Sard.(Campid.) | zicchiriai | cigolare |
| Ital.: Sard. | tsikkiriare | stridere, cigolare |
| Ital.: Sard. | thikkiría | rattle |
| Ital.: Sarabic | cicrinu | Kestrel, 234 |
| Mod.Greek | tsíkros | Kestrel, 234 |
| Esp. | ciquillín | Kestrel, 234 |
| Esp.: And. | chiculío | voice of the Goldfinch, 415 |
| Esp.: Almería | chiclo | loud voice |
| Ital.: Cal. | cicaredda | Great Tit, 390 |
| Ital.: Bari | cecareddu | sandpipers, 180 |
| Ital.: Sic. | cichitedda | talkative woman; Reed Warbler, 374, 378 |
| Ital.: Berg. | cichata | Reed Warbler, 374 |
| Ital.: Frasco (TI) | cicoti | peeping of chicks |
| Franç.: wall. | chicoter | to sing (birds) |
| Lat. | cicada | cicada |
| Franç.: Périg. | eissicado | cri déchirant |
| Franç.: Cahors | tsikhpa | être agacé, FEW 22: 71 |
| Prov. | chicayré | Song Thrush, 339; bird call (object) |
| Prov. | chica | to prattle |
| Roman. | cicoare | Garden Warbler, 357 |
| Ital.: Amiata | cica | Great Tit, 390 |
| Ital.: Nap. | secariello | Common Sandpiper, 178 |
| Ital.: reg. | sechèta | Great Tit, 390 |
| Ital. | secare | to cut (produces a sharp sound) |
| Czech | sekati | id. |
| Esp. | zacapela | uproar, yell, noise, bustle |
| Esp. | zacatín | a place where garments are sold, i.e. peddled aloud |
| Esp.: Ast. | zaconela | Lapwing, 158 |
| Esp.: Cubda | zacateca | a member of a funeral procession (crying aloud) |
| Franç.: Juvigny | secá | pleurer, FEW 21: 315 et 22: 61 |
| Franç.: Sav. | secá | tousser, FEW 21: 315 |
| Franç.: Savièse | dzekyená | se plaindre, FEW 22: 62 |
| Franç.: Arsure | sœké | rot, FEW 21: 318 |
| Franç.: FR | tsequet | hoquet |
| Franç. | sec | se dit d'un bruit claquant (ne peut avoir de rapport sémantique avec sec "déshydraté" ð3.4.7.) |
| Franç.: VS, Dauph. | tsac! | interjection imitant un bruit sec, spécialement une section, FEW 23: 197 |
| Roman. | tâcâr | to clatter |
| Roman. | tâcâitoare | Red-backed Shrike, 326 |
| Roman. | tâcânit | squeaking |
| Ital.: Sard. | tsaccare | to crackle |
| Sbc. | cvakati | (parasitic /v/) to drum (Great Spotted Wodpecker, 273) |
| Ital.: Sard. | tsaccaredda | rattle |
| Ital.: Romg. | tsacla, tsàcula | domestic duck, 40 |
| Ital.: Ven. | ánara da zógolo | domestic duck, 40 |
| Ital.: Romg. | tsacleí | to prattle |
| Franç.: Fr.C. | syokeler | to cackle (domestic hen, 2) |
| Prov. | sanclame | plainte incessante, FEW 22: 62 |
| Lith. | cigzdé | Great Tit, 390 |
| Lith. | cigzdis | Song Thrush, 339 |
| Lettish | cigusis | House Sparrow, 410 |
| Sbc. | ciga | Goldfinch, 415 |
| Sbc. | cigavac | Meadow Pipit, 305 |
| Pol. | s'ciga | sandpipers, 180 |
| Alb. | cigaris | to fry |
| Ital.nord | tsigare | to whistle |
| Ital.: Ven. | sigar, zigar | to cry |
| Ital.nord | zègar, arzeiguel, arzávola | (g>v) Garganey, 43 |
| Ital.: Sic. | zagarogna | Barn Owl, 238 |
| Ital.: Valt. | söga | Buzzard, 211 |
| Franç.: Lavedan | ségo | Ptarmigan, 12 |
| Basque | sagaro | Black Swift, 321 |
| Prov. | segueurou | Kestrel, 234 |
| Franç.: Celles | sigreler | se dit d'un bruit de froissement métallique, FEW 23: 203 |
| Ital.: Valt. | Sigüra | cicada |
| Franç.:St. Didier.T. | Siüré | se dit d'un enfant qui crie tout le temps, FEW 23: 63 |
| Ital.: Gen. | scigurun | Wigeon, 46 |
| Ital.: Varese | sicüron | sandpipers, 171 |
| Cat.: Mgerm. | xiguera | Great Tit, 390 |
| Port. | cigareiro | Kestrel, 234 |
| Port.: Madeira | cigarrinho | Spectacled Warbler, 364 |
| Prov. | cigaroun | Great Reed Warbler, 373 |
| Ital.: Roma | sugherone | Smew, 62 |
| Esp.: Nav. | sugarina | Lapwing, 158 |
| Ukr. | Sugaj | Black Kite, 215 |
| Roman. | sugui | to banter |
| Sbc. | cegretusa | Garganey, 43 |
| Sbc. | cigra | Common Tern, 97, 100 |
| Russian | cegrava | tern, 95, 100 |
| Esp. | chigre | Kestrel, 234 |
| Pers. | jigrana | Stone Curlew, 154 |
| Pers. | jigrana et var. | Stone Curlew, 154 |
| amh. | jigra et var. | Guineafowl, 6 |