The spelling of the word "jettier" is a bit unusual. It is derived from the word "jetty", meaning a structure built out into water to protect a harbor or shoreline. The -ier suffix is added to imply a comparative form, meaning "more like a jetty". The IPA phonetic transcription of "jettier" is /ˈdʒɛtiːər/, with the stress on the second syllable. It is pronounced like "jet-tee-uhr", with the "t" and "e" sounds blending together.