What makes a strong opening word
A good first guess does one job: it tests as many high-frequency letters as possible in one shot. The letters E, A, R, O, T, L, I, S, N and C appear far more often in five-letter answers than the rest of the alphabet, so a starting word built from that pool tells you the most about the day’s solution.
That is why words like CRANE, SLATE, TRACE, CRATE and SLANT consistently perform well — each uses five distinct, common letters with a sensible mix of vowels and consonants (see our data-driven ranking of the best Wordle starting words). ADIEU is popular because it packs in four vowels, but it wastes two consonant slots and often leaves you knowing the vowels without a clear next move.
There is no single “best” word, but there is a clear tier: pick something with five unique, common letters and at least two vowels, and avoid burning a guess on rare letters (J, Q, X, Z) or repeats on turn one.