osetljivo

1. (of a reaction) sensitively; touchily
   On na svaku kritiku reaguje veoma osetljivo. — He reacts very touchily to any criticism.
   Moja koža osetljivo reaguje na jako sunce. — My skin reacts sensitively to strong sun.
2. colloq. (of degree, change) noticeably; considerably
   Cene struje su osetljivo porasle ove godine. — Electricity prices rose noticeably this year.

In the sense 'noticeably' standard Serbian uses osetno (cene su osetno porasle); osetljivo in this sense occurs in the press and speech but is considered incorrect. The synonyms primetno, znatno apply to this sense only.