You can put poly (= many) to denote a plane shape bounded by an unspecified number of straight lines or a Greek prefix for any number from three upwards to denote a polygon with the specified number of sides.
The prefix that can be put in front of "care" is "dis-" to form the word "discare."
The prefix "un-" can be put in front of the word "describe" to create the word "undescribe."
The prefix "counter-" can be added in front of the word "clockwise" to form the term "counterclockwise."
The prefix that can be put in front of "plausible" is "im-".
The prefix "dis-" can be added to the front of "interest" to form the word "disinterest," which means lack of interest or impartiality.
illegitimate
Yes, it is. It's composed of "prae" (before, in front of) and "fixere" (if you want so... to fix)... so a prefix is something you put before a word...
7-letter wordsbethink, rethink, unthink8-letter wordsmisthink, outthink9-letter wordsoverthink10-letter wordsgroupthink11-letter wordsdoublethink
The word 'creatures' does not have a prefix. The root word is create and the ending is changed to 'ures' to denote that it is a thing that has been created.
The prefix of "fault" is "un-". A prefix is a group of letters added before a word to modify its meaning. In this case, adding "un-" to "fault" changes the meaning to indicate the absence or opposite of fault.
no idea
disgrown