Synonyms of the word 
LAST-MINUTE → UNPUNCTUAL
last-minute
- adj. Just before it is too late; in the nick of time.
unpunctual
- adj. Not punctual.
If you are interested in words, visit the following sites :
- wiktionary.org/last-minute For complete definition of a word
- 1word.ws/lastminute to play with words, suffixs, prefixs, etc.