Certain types of variation are licenced by phonotactics. For example, the American English phoneme /t/ varies word-finally (ba[t] similar to ba[?]), but not word-initially. We used a Deese-Roediger-McDermott false memory paradigm to pursue the hypothesis that, given comparable information in the speech stream, varying words (such as bat) activate less strongly than non-varying words (such as tip). We presented listeners with lists of phonological neighbours, such as rat, ban, bet, etc. (neighbours of bat), and lip, tin, type, etc. (neighbours of tip), followed by recall and recognition tasks. Results showed that participants often "remembered" the unheard words bat and tip, replicating previous work indicating that activation from neighbours can produce false memories. Most importantly, false memory rates were significantly lower for bat compared to tip, suggesting that the presence of phonotactic conditions for variability affected the lexical activation of a word, compared to the absence of such conditions.