肌が脂っぽいのです。

skin; body (in the context of intimate bodily contact); surface; grain (e.g. of wood); texture; disposition; temperament; character; type

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

fat; tallow; lard; grease

-ish; -like; tossing something out; throwing something away

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

be; is