Two words
May be 2 words combined (en+caustice) If not obvious, probably incorrect
caustic.e N 1 6 NOM S F
caustic.e N 1 6 VOC S F
caustic.e N 1 6 ABL S F
caustice, caustices N F [DAXFS] Late veryrare
caustic plant; (pure Latin scelerata);
caustic.e ADJ 1 1 VOC S M POS
causticus, caustica, causticum ADJ [XSXNO] Pliny
caustic, corrosive, burning; [~ spuma => lye with which Germans colored hair];
en INTERJ
en INTERJ [XXXBX]
behold! see! lo! here! hey! look at this!;
e SUFFIX
-ly; -ily; Converting ADJ to ADV
caustic.e ADV POS
causticus, caustica, causticum ADJ [XSXNO] Pliny
caustic, corrosive, burning; [~ spuma => lye with which Germans colored hair];
*

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This, our local install of the popular standby Whitaker's Words, is possible thanks to the resurrection of the venerable project at William Whitaker's Words, where you will also find extensive documentation. The corresponding GitHub repository is where you can submit issues about missing forms and analyses.
This web interface by Walter M. Shandruk.