A consonant cluster is a group of two or more consonant sounds occurring together without a vowel between them.
An initial consonant cluster occurs at the beginning of a word.
Texts – Cluster at the end (/ksts/), not initial. ❌
Blue – Begins with the consonant cluster /bl/ ✅
Sects – Final consonant cluster (/kts/), not initial. ❌
Toys – Begins with a single consonant /t/, followed by a diphthong /ɔɪ/. No initial cluster. ❌
🔹 So, the word with an initial consonant cluster is blue (/bluː/ → /b/ + /l/).