poisonous
poison
The suffix -ful means full of and plenty means alot so the meaning of plentiful is full of plenty .
humorous
joyous
the suffix crine means to cry out the suffix crine means to cry out
The suffix -ology means the study of. Astro- means stars.
The suffix in excessive is ive.
suffix that means to eat
The suffix that means "resembling" is "-oid".
The suffix that means pertaining to is "-al".
The suffix that means prolapse is "-ptosis."
The suffix -ology means the study of