-ish

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Of, relating to, or being: Swedish.
2. n. Characteristic of: girlish.
3. n. Having the usually undesirable qualities of: childish.
4. n. Approximately; somewhat: greenish.
5. n. Tending toward; preoccupied with: selfish.

Century Dictionary and Cyclopedia

1. To go out; issue.
2. n. Issue; liberty and opportunity of going out.
3. n. A termination of Anglo-Saxon origin, used as a regular formative of adjectives. of adjectives from common nouns, signifying ‘of the nature of,’ ‘being like’ the object denoted by the noun, as animals, as in apish, bearish, cattish, doggish, eelish, hoggish, mulish, owlish, piggish, snakish, brutish, etc.; or persons or supposed beings, as babyish, boyish, childish, girlish, devilish, duncish, foolish, foppish, ghoulish, impish, roguish, etc.; or places, as hellish; or acts or qualities, as snappish, etc. In most of these words it has acquired by association with the noun a more or less depreciative or contemptuous force; and so in some other words, as mannish, womanish, in which the noun has no depreciative sense.
4. n. A termination of some English verbs of French origin, or formed on the type of such verbs, having no assignable force, but being merely a terminal relic. It occurs in abolish, astonish, banish, demolish, diminish, establish, finish, minish, punish, stablish, etc. In some verbs it appears in another form -ise, as in advertise. See -ise.

Wiktionary

1. n. appended to many kinds of words Typical or similar to.
2. n. appended to adjectives Somewhat.
3. n. About, approximately.
4. n. appended to roots denoting names of nations or regions Of a nationality, place, language or similar association with something.

GNU Webster's 1913

1. A suffix used to from adjectives from nouns and from adjectives. It denotes relation, resemblance, similarity, and sometimes has a diminutive force
2. A verb ending, originally appearing in certain verbs of French origin.