| sagu |
| basasagu, satagin +naf (Apodemus sylvaticus) | (ize) | [fauna] [ugaztunak] | ratón de campo | | etxe-sagu (Mus musculus, Mus domesticus)  | (ize) | [fauna] [ugaztunak] | ratón casero | | landa-sagu (Mus spretus) | (ize) | [fauna] [ugaztunak] | ratón moruno, ratón campestre | | sagu (Mus sp.) | (ize) | [fauna] [ugaztunak] | ratón | | sagu lepahori (Apodemus flavicollis) | (ize) | [fauna] [ugaztunak] | ratón leonado | | uzta-sagu (Micromys minutus) | (ize) | [fauna] [ugaztunak] | ratón espiquero | | errabia-belar, errabia belar, sagu-belar, sagu belar (Hieracium pilosella) | (ize) | [flora] [landare] [sendabelar] | vellosilla |
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| salikaria |
| egur-belar, egur belar, salikaria (Lythrum salicaria L.) | (ize) | [flora] [landare] [sendabelar] | arroyuela, salicaria |
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| San Benito belar |
| San Benito belar (Geum sp.) | (ize) | [flora] [landare] [sendabelar] | cariofilada, hierba de San Benito |
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| San Jorge lore |
| San Jorge lore (Centranthus ruber) | (ize) | [flora] [landare] [sendabelar] | milamores, centranto, valeriana roja, alfeñique |
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| San Juan lore |
| santio-belar, San Juan lore (Hypericum perforatum L.) | (ize) | [flora] [landare] [sendabelar] | hipérico, hierba de San Juan |
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| San Robertoren zaingorri |
| zaingorri, kurlo-belar +zub, kurlo belar +zub, San Robertoren zaingorri (Geranium robertiaum L.) | (ize) | [flora] [landare] [sendabelar] | Geranium robertianum, Hierba de San Roberto, geranio robertiano |
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| santio-belar |
| santio-belar, San Juan lore (Hypericum perforatum L.) | (ize) | [flora] [landare] [sendabelar] | hipérico, hierba de San Juan |
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| saparlar |
| erkalatz +g.er, isuski-garratz, saparlar (Berberis vulgaris L.) | (ize) | [flora] [landare] [sendabelar] | agracejo |
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| sarpoil |
| sarpoil (Thymus serpyllum) | (ize) | [flora] [landare] [sendabelar] | serpol |
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| sasi |
| lahar, sasi, lapar, masustaondo (Rubus fruticosus) | (ize) | [flora] [sendabelar] | zarza, zarzamora | | sasi-txori arrunt, sasi-txori, sasi-txori poliglota (Hippolais polyglotta) | (ize) | [fauna] [hegaztiak] | zarcero común, zarcero políglota | | sasi-txori zurizta (Hippolais opaca) | (ize) | [fauna] [hegaztiak] | zarcero pálido occidental, zarcero bereber | | sastraka kendu, sasitza kendu, sastrakaz garbitu, sasiz garbitu, eskokatu, soildu | (adi) | | desbrozar | | sastraka, sastrakadi, brosta +ipar, sasiarte, sastraka, sasitza, sasidi, sasi-lahar +g.er, sasi | (ize) | [flora] [geografia] | matorral, maleza | | lahar, lapar +batez_ere +ipar (Rubus sp.) | (ize) | [flora] [zuhaitzak] | zarza | | lahartsu, laharrez bete, sasitsu | (adj) | | lleno de maleza | | lahartu, laharrez bete | (adi) | | cerrar(se) un camino por maleza |
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| sorgin-orrazi |
| sorgin-orrazi, sorgin orrazi (Carduus crispus) | (ize) | [flora] [landare] [sendabelar] | cardo de burro |
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| sugegorri |
| aspis sugegorri (Vipera aspis) | (ize) | [fauna] [narrastiak] | víbora áspid | | lataste sugegorri (Vipera latastei) | (ize) | [fauna] [narrastiak] | víbora hocicuda | | Seoane sugegorri, sugegorri kantauriar (Vipera seoanei) | (ize) | [fauna] [narrastiak] | víbora de Seoane | | sugegorri, bipera +ipar (Fam. Viperidae) | (ize) | [fauna] [narrastiak] | víbora | | sugegorri europar (Vipera berus) | (ize) | [fauna] [narrastiak] | víbora común europea | | sugegorri-belar (Echium vulgare) | (ize) | [flora] [landare] [sendabelar] | viborera, buglosa, chupamieles, hierba azul, lengua de vaca, paquetequieromañosa |
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