| 100% | TBT | 3 | Nostalgic Instagram hashtag: Abbr. |
| 66% | TBT | 3 | Instagram hashtag accompanying a nostalgic photo |
| 64% | TBT | 3 | Nostalgic hashtag: Abbr. |
| 64% | TBTS | 4 | Nostalgic hashtags: Abbr. |
| 64% | TBT | 3 | Instagram hashtag to reminisce about the past: Abbr. |
| 62% | TBT | 3 | Palindromic nostalgic hashtag: Abbr. |
| 60% | TBT | 3 | Nostalgic memory-related hashtag: Abbr. |
| 57% | TBT | 3 | Often used nostalgic hashtag: Abbr. |
| 55% | TBT | 3 | Nostalgia-related hashtag on an Instagram post, maybe: Abbr. |
| 47% | TBT | 3 | Instagram hashtag for retro pics |
| 47% | INSPO | 5 | Instagram hashtag akin to #goals |
| 46% | GRWM | 4 | Instagram hashtag for getting dressed up |
| 46% | TBT | 3 | Nostalgic hashtag |
| 46% | TBT | 3 | Nostalgia-related hashtag: Abbr. |
| 46% | TBT | 3 | Hashtag for memories: Abbr. |
| 46% | TBT | 3 | Nostalgia-inducing hashtag: Abbr. |
| 45% | HAIR | 4 | Good ___ day (popular Instagram hashtag) |
| 45% | TBT | 3 | Nostalgic hashtag letters |
| 45% | TBT | 3 | Nostalgic-photo hashtag |
| 42% | TBT | 3 | Hashtag on some nostalgic pics |
| 41% | TBT | 3 | Nostalgic hashtag for a certain weekday |
| 41% | TBT | 3 | Hashtag for a nostalgic pic, maybe |
| 39% | THROWBACK | 9 | ___ Thursday, popular weekday hashtag on Instagram |
| 38% | WOMAN | 5 | ___ Crush Wednesday, popular weekday hashtag on Instagram |
| 38% | MAN | 3 | ___ Crush Monday, popular weekday hashtag on Instagram |
| 36% | TBT | 3 | Palindromic hashtag reminding one of old memories: Abbr. |
| 36% | TBT | 3 | Palindromic hashtag for a nostalgia-inducing trend: Abbr. |
| 36% | DMS | 3 | Slide into the ___ (contact someone on Instagram): Abbr. |
| 36% | DMS | 3 | Private messages on Instagram: Abbr. |
| 36% | DMS | 3 | Private conversations on Instagram: Abbr. |