ITISI
5 letters
Historical clue formulations
- Formal response at the door — 2018-10-02
- Formal response to "Who goes there?" — 2016-06-15
- Response to "Who goes there?" — 2016-03-13
- Formal identification — 2015-11-15
- Formal response at the door — 2014-08-07
- Formal identification — 2014-01-18
- "Who goes there?" reply — 2013-05-19
- Dramatic response to "Who's there?" — 2013-04-21
- "Who's there?" reply — 2012-03-22
- Formal acknowledgment — 2011-09-22
- Grammatically proper identification — 2011-06-05
- Formal response to "Who's there?" — 2011-05-06
- Stilted response to "Who's there?" — 2010-11-23
- Formal answer to "Who's at the door?" — 2009-05-26
- Formal response to "Who's there?" — 2009-02-16
- Answer to "Who's there?" — 2007-11-07
- Answer to "Who's there?" — 2006-08-16
- Reply to "Who's there?" — 2005-12-23
- Formal response to "Who's there?" — 2005-09-04
- Formal declaration — 2005-07-01
- Formal reply to "Who's there?" — 2003-08-19
- "Who's there?" response — 2003-03-19
- Formal phrase of identification — 2001-02-17
- Answer to "Who's there?" — 1996-05-19
- Answer to "Who's there?" — 1994-07-03