Catalan has few suppletive couplets, like Italian and Spanish, and unlike French. Thus, Catalan has noi/noia ("boy"/"girl") and gall/gallina ("cock"/"hen"), whereas French has garcon/fille and coq/poule.
Is there an answer to this question (If it cannot be answered, say "unanswerable"): What language is not like Catalan in suppletive couplets?
French