(Old English: -leas, from leas, "free from, devoid of, false, feigned"; suffix meaning "lacking")

(Greek: usually a suffix meaning: lead, leading, leading forth, guide, guiding; bring, take; promoting, stimulating)

(Greek: -etikos, an adjective suffix meaning "pertaining to, of the nature of" for nouns ending in -esis)

(Old English: a suffix meaning, characteristic of, like, tending to; of or relating to, from; somewhat, approximately; or a verb ending)

(Greek: a suffix meaning: to talk, to speak; a branch of knowledge; any science or academic field that ends in -ology which is a variant of -logy; a person who speaks in a certain manner; someone who deals with certain topics or subjects)