Quiet for a week. I'll close it.

GG5: 
4 年間払い込んだ生命保険を掛け捨てにした. After paying the 「premiums [installments] for four years I (stopped paying and) allowed the life assurance policy to lapse.
掛け捨ての 〔満期の払い戻しなしの〕 non-profit; without profits; 〔中途放棄の〕 lapsed 《policy》
掛け捨ての火災保険 without-profits fire insurance.
中辞典:
〈保険の〉 insurance that provides no return when coverage ends
掛け捨てにする stop paying installments halfway [part way] through the term of the contract
保険金の掛け捨て insurance that returns no premium.
ルミナス:
掛け捨ての 保険 (⇒定期の) term insurance
Daijs: （１）保険・無尽などで，中途で掛け金を中止するなどしたため，払い込んだ金が無駄になること。 （２）保険や共済組合の掛け金を払い込んでも，一定期間内に契約に該当する災害・傷害などに遭わなければ払い戻しを受けられない方式のこと。
掛け捨て	56327	  
掛け捨ての	10242	  
掛け捨て保険	5520	  
掛け捨ての保険	3263

Very messy. An attempt to capture the range of meanings. Amendments welcome.

@@ -22 +22,7 @@
-<gloss>rendering the amount already paid into an insurance scheme worthless by letting it lapse (by not paying it)</gloss>
+<pos>&adj-no;</pos>
+<gloss>fixed-term payment (usu. insurance)</gloss>
+</sense>
+<sense>
+<pos>&n;</pos>
+<s_inf>usu. 〜にする</s_inf>
+<gloss>stopping payment of installments (usu. insurance)</gloss>

@@ -7,0 +8,3 @@
+</k_ele>
+<k_ele>
+<keb>掛捨て</keb>
@@ -19 +22 @@
-<gloss>failing to honor (honour) an installment payment (instalment)</gloss>
+<gloss>rendering the amount already paid into an insurance scheme worthless by letting it lapse (by not paying it)</gloss>