| var. of the adjective-forming suffix -al1, joined to words in which an l precedes the suffix: circular; lunar; singular. |
| var. of -er 2 , often under the influence of a spelling with -ar- in a cognate Latin noun: burglar; cellar; collar; mortar; poplar; scholar; vicar; vinegar. |
| -ar suff. Of, relating to, or resembling: polar. [Middle English, from Old French -er, from Latin -āris, variant of -ālis, -al.] |
