The phrase 'on pins and needles' is used to describe a feeling of nervousness or anticipation. The crossword solutions for this phrase include TINGLING (8 letters), EDGY (4 letters), UNEASY (6 letters), atingle (7 letters), EAGER (5 letters), AGOG (4 letters), TENSE (5 letters), ANTSY (5 letters), inastate (8 letters), inasweat (8 letters), and illatease (9 letters). All of these words can be used to describe the feeling of being on pins and needles, as they all imply a sense of unease, excitement, or tension.