effusive
UK[ɪˈfjuːsɪv]US[ɪˈfjuːsɪv]
adj
Expressing feelings of gratitude, pleasure, or approval in an unrestrained and heartfelt manner.
adj
(Geology) Relating to igneous rock formed by solidification of magma that has flowed onto the Earth's surface.
Morpheme Breakdown
ef
fus
ive
ef
out
fus
pour
ive
adjective suffix
Etymology
The word 'effusive' originates from the Latin verb 'fundere', meaning 'to pour', which itself can be traced to the Proto-Indo-European root gheu-, 'to pour'. The prefix 'ex-' (here as 'ef-') means 'out', creating the literal sense of 'pouring out'. This concrete image was metaphorically extended in the 17th century to describe emotions or speech that are 'poured out' without restraint. The geological sense, describing lava that is 'poured out' onto the surface, developed later, directly preserving the term's original physical logic.
Analysis
Structure: ef (out) + fus (pour) + ive (adjective suffix)
- ef: A variant of the Latin prefix 'ex-', meaning 'out'. It assimilates before 'f'.
- fus: From the Latin root 'fundere', meaning 'to pour'.
- ive: A suffix of Latin origin ('-ivus') used to form adjectives meaning 'having the nature or quality of'.
Examples
She was effusive in her praise for the team's hard work.
His effusive welcome made the guests feel immediately at home.
The island is composed primarily of effusive volcanic rock like basalt.